Home / 7,712.47-11,566.68-2,781.19

Finding the Fourth Proportional to 7,712.47, 11,566.68 and 2,781.19

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Solution

The fourth proportional to 7,712.47, 11,566.68 and 2,781.19 is: 4,171.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,712.47 : 11,566.68 = 2,781.19 : x
  2. Step 2: Convert to fraction form
    7,712.47/11,566.68 = 2,781.19/x
  3. Step 3: Cross multiply
    7,712.47x = 11,566.68 × 2,781.19
  4. Step 4: Simplify right side
    7,712.47x = 32,169,134.75
  5. Step 5: Solve for x
    x = 32,169,134.75/7,712.47
  6. Step 6: Final answer
    x = 4,171.05

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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.