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Finding the Fourth Proportional to 7,200.53, 9,936.42 and 4,013.66

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Solution

The fourth proportional to 7,200.53, 9,936.42 and 4,013.66 is: 5,538.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,200.53 : 9,936.42 = 4,013.66 : x
  2. Step 2: Convert to fraction form
    7,200.53/9,936.42 = 4,013.66/x
  3. Step 3: Cross multiply
    7,200.53x = 9,936.42 × 4,013.66
  4. Step 4: Simplify right side
    7,200.53x = 39,881,411.50
  5. Step 5: Solve for x
    x = 39,881,411.50/7,200.53
  6. Step 6: Final answer
    x = 5,538.68

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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.