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Finding the Fourth Proportional to 8,079.81, 11,124.81 and 7,341.67

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Solution

The fourth proportional to 8,079.81, 11,124.81 and 7,341.67 is: 10,108.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,079.81 : 11,124.81 = 7,341.67 : x
  2. Step 2: Convert to fraction form
    8,079.81/11,124.81 = 7,341.67/x
  3. Step 3: Cross multiply
    8,079.81x = 11,124.81 × 7,341.67
  4. Step 4: Simplify right side
    8,079.81x = 81,674,683.83
  5. Step 5: Solve for x
    x = 81,674,683.83/8,079.81
  6. Step 6: Final answer
    x = 10,108.49

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Half scale
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Double scale
Find fourth proportional to 8,080.81, 11,126.19 and 7,342.67
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.