Home / 7,714.20-11,571.30-7,665.60

Finding the Fourth Proportional to 7,714.20, 11,571.30 and 7,665.60

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Solution

The fourth proportional to 7,714.20, 11,571.30 and 7,665.60 is: 11,498.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,714.20 : 11,571.30 = 7,665.60 : x
  2. Step 2: Convert to fraction form
    7,714.20/11,571.30 = 7,665.60/x
  3. Step 3: Cross multiply
    7,714.20x = 11,571.30 × 7,665.60
  4. Step 4: Simplify right side
    7,714.20x = 88,700,957.28
  5. Step 5: Solve for x
    x = 88,700,957.28/7,714.20
  6. Step 6: Final answer
    x = 11,498.40

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Similar ratio
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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.