Home / 7,712.60-11,566.87-2,781.32

Finding the Fourth Proportional to 7,712.60, 11,566.87 and 2,781.32

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Solution

The fourth proportional to 7,712.60, 11,566.87 and 2,781.32 is: 4,171.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,712.60 : 11,566.87 = 2,781.32 : x
  2. Step 2: Convert to fraction form
    7,712.60/11,566.87 = 2,781.32/x
  3. Step 3: Cross multiply
    7,712.60x = 11,566.87 × 2,781.32
  4. Step 4: Simplify right side
    7,712.60x = 32,171,102.08
  5. Step 5: Solve for x
    x = 32,171,102.08/7,712.60
  6. Step 6: Final answer
    x = 4,171.24

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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.