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Finding the Fourth Proportional to 7,434.90, 11,240.55 and 7,434.90

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Solution

The fourth proportional to 7,434.90, 11,240.55 and 7,434.90 is: 11,240.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,434.90 : 11,240.55 = 7,434.90 : x
  2. Step 2: Convert to fraction form
    7,434.90/11,240.55 = 7,434.90/x
  3. Step 3: Cross multiply
    7,434.90x = 11,240.55 × 7,434.90
  4. Step 4: Simplify right side
    7,434.90x = 83,572,365.20
  5. Step 5: Solve for x
    x = 83,572,365.20/7,434.90
  6. Step 6: Final answer
    x = 11,240.55

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.