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Finding the Fourth Proportional to 7,490.78, 10,337.92 and 4,134.32

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Solution

The fourth proportional to 7,490.78, 10,337.92 and 4,134.32 is: 5,705.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,490.78 : 10,337.92 = 4,134.32 : x
  2. Step 2: Convert to fraction form
    7,490.78/10,337.92 = 4,134.32/x
  3. Step 3: Cross multiply
    7,490.78x = 10,337.92 × 4,134.32
  4. Step 4: Simplify right side
    7,490.78x = 42,740,269.41
  5. Step 5: Solve for x
    x = 42,740,269.41/7,490.78
  6. Step 6: Final answer
    x = 5,705.72

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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.