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Finding the Fourth Proportional to 8,642.32, 11,926.84 and 4,865.30

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Solution

The fourth proportional to 8,642.32, 11,926.84 and 4,865.30 is: 6,714.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,642.32 : 11,926.84 = 4,865.30 : x
  2. Step 2: Convert to fraction form
    8,642.32/11,926.84 = 4,865.30/x
  3. Step 3: Cross multiply
    8,642.32x = 11,926.84 × 4,865.30
  4. Step 4: Simplify right side
    8,642.32x = 58,027,654.65
  5. Step 5: Solve for x
    x = 58,027,654.65/8,642.32
  6. Step 6: Final answer
    x = 6,714.36

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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.