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Finding the Fourth Proportional to 7,393.66, 11,009.96 and 7,311.84

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Solution

The fourth proportional to 7,393.66, 11,009.96 and 7,311.84 is: 10,888.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,393.66 : 11,009.96 = 7,311.84 : x
  2. Step 2: Convert to fraction form
    7,393.66/11,009.96 = 7,311.84/x
  3. Step 3: Cross multiply
    7,393.66x = 11,009.96 × 7,311.84
  4. Step 4: Simplify right side
    7,393.66x = 80,503,065.93
  5. Step 5: Solve for x
    x = 80,503,065.93/7,393.66
  6. Step 6: Final answer
    x = 10,888.12

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.