Home / 8,011.68-11,061.32-7,170.92

Finding the Fourth Proportional to 8,011.68, 11,061.32 and 7,170.92

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Solution

The fourth proportional to 8,011.68, 11,061.32 and 7,170.92 is: 9,900.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,011.68 : 11,061.32 = 7,170.92 : x
  2. Step 2: Convert to fraction form
    8,011.68/11,061.32 = 7,170.92/x
  3. Step 3: Cross multiply
    8,011.68x = 11,061.32 × 7,170.92
  4. Step 4: Simplify right side
    8,011.68x = 79,319,840.81
  5. Step 5: Solve for x
    x = 79,319,840.81/8,011.68
  6. Step 6: Final answer
    x = 9,900.53

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Half scale
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Double scale
Find fourth proportional to 8,012.68, 11,062.70 and 7,171.92
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.