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Finding the Fourth Proportional to 9,472.48, 13,072.20 and 5,280.76

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Solution

The fourth proportional to 9,472.48, 13,072.20 and 5,280.76 is: 7,287.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,472.48 : 13,072.20 = 5,280.76 : x
  2. Step 2: Convert to fraction form
    9,472.48/13,072.20 = 5,280.76/x
  3. Step 3: Cross multiply
    9,472.48x = 13,072.20 × 5,280.76
  4. Step 4: Simplify right side
    9,472.48x = 69,031,150.87
  5. Step 5: Solve for x
    x = 69,031,150.87/9,472.48
  6. Step 6: Final answer
    x = 7,287.55

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.