Home / 8,670.72-11,966.16-5,691.60

Finding the Fourth Proportional to 8,670.72, 11,966.16 and 5,691.60

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Solution

The fourth proportional to 8,670.72, 11,966.16 and 5,691.60 is: 7,854.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,670.72 : 11,966.16 = 5,691.60 : x
  2. Step 2: Convert to fraction form
    8,670.72/11,966.16 = 5,691.60/x
  3. Step 3: Cross multiply
    8,670.72x = 11,966.16 × 5,691.60
  4. Step 4: Simplify right side
    8,670.72x = 68,106,596.26
  5. Step 5: Solve for x
    x = 68,106,596.26/8,670.72
  6. Step 6: Final answer
    x = 7,854.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.