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Finding the Fourth Proportional to 5,318.76, 7,981.02 and 3,792.36

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Solution

The fourth proportional to 5,318.76, 7,981.02 and 3,792.36 is: 5,690.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.76 : 7,981.02 = 3,792.36 : x
  2. Step 2: Convert to fraction form
    5,318.76/7,981.02 = 3,792.36/x
  3. Step 3: Cross multiply
    5,318.76x = 7,981.02 × 3,792.36
  4. Step 4: Simplify right side
    5,318.76x = 30,266,901.01
  5. Step 5: Solve for x
    x = 30,266,901.01/5,318.76
  6. Step 6: Final answer
    x = 5,690.59

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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.