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Finding the Fourth Proportional to 5,781.90, 8,659.88 and 4,479.42

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Solution

The fourth proportional to 5,781.90, 8,659.88 and 4,479.42 is: 6,709.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,781.90 : 8,659.88 = 4,479.42 : x
  2. Step 2: Convert to fraction form
    5,781.90/8,659.88 = 4,479.42/x
  3. Step 3: Cross multiply
    5,781.90x = 8,659.88 × 4,479.42
  4. Step 4: Simplify right side
    5,781.90x = 38,791,239.67
  5. Step 5: Solve for x
    x = 38,791,239.67/5,781.90
  6. Step 6: Final answer
    x = 6,709.08

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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.