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Finding the Fourth Proportional to 7,317.60, 10,978.96 and 2,387.19

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Solution

The fourth proportional to 7,317.60, 10,978.96 and 2,387.19 is: 3,581.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,317.60 : 10,978.96 = 2,387.19 : x
  2. Step 2: Convert to fraction form
    7,317.60/10,978.96 = 2,387.19/x
  3. Step 3: Cross multiply
    7,317.60x = 10,978.96 × 2,387.19
  4. Step 4: Simplify right side
    7,317.60x = 26,208,863.52
  5. Step 5: Solve for x
    x = 26,208,863.52/7,317.60
  6. Step 6: Final answer
    x = 3,581.62

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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.