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Finding the Fourth Proportional to 7,202.43, 9,938.79 and 4,015.53

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Solution

The fourth proportional to 7,202.43, 9,938.79 and 4,015.53 is: 5,541.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,202.43 : 9,938.79 = 4,015.53 : x
  2. Step 2: Convert to fraction form
    7,202.43/9,938.79 = 4,015.53/x
  3. Step 3: Cross multiply
    7,202.43x = 9,938.79 × 4,015.53
  4. Step 4: Simplify right side
    7,202.43x = 39,909,509.41
  5. Step 5: Solve for x
    x = 39,909,509.41/7,202.43
  6. Step 6: Final answer
    x = 5,541.12

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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.