Home / 5,479.83-8,217.68-1,781.06

Finding the Fourth Proportional to 5,479.83, 8,217.68 and 1,781.06

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Solution

The fourth proportional to 5,479.83, 8,217.68 and 1,781.06 is: 2,670.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.83 : 8,217.68 = 1,781.06 : x
  2. Step 2: Convert to fraction form
    5,479.83/8,217.68 = 1,781.06/x
  3. Step 3: Cross multiply
    5,479.83x = 8,217.68 × 1,781.06
  4. Step 4: Simplify right side
    5,479.83x = 14,636,131.15
  5. Step 5: Solve for x
    x = 14,636,131.15/5,479.83
  6. Step 6: Final answer
    x = 2,670.91

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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.