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Finding the Fourth Proportional to 7,553.71, 11,332.34 and 7,428.18

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Solution

The fourth proportional to 7,553.71, 11,332.34 and 7,428.18 is: 11,144.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,553.71 : 11,332.34 = 7,428.18 : x
  2. Step 2: Convert to fraction form
    7,553.71/11,332.34 = 7,428.18/x
  3. Step 3: Cross multiply
    7,553.71x = 11,332.34 × 7,428.18
  4. Step 4: Simplify right side
    7,553.71x = 84,178,661.34
  5. Step 5: Solve for x
    x = 84,178,661.34/7,553.71
  6. Step 6: Final answer
    x = 11,144.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.