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Finding the Fourth Proportional to 9,691.60, 14,548.20 and 5,317.60

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Solution

The fourth proportional to 9,691.60, 14,548.20 and 5,317.60 is: 7,982.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,691.60 : 14,548.20 = 5,317.60 : x
  2. Step 2: Convert to fraction form
    9,691.60/14,548.20 = 5,317.60/x
  3. Step 3: Cross multiply
    9,691.60x = 14,548.20 × 5,317.60
  4. Step 4: Simplify right side
    9,691.60x = 77,361,508.32
  5. Step 5: Solve for x
    x = 77,361,508.32/9,691.60
  6. Step 6: Final answer
    x = 7,982.33

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1.5x scale

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.