Home / 5,479.52-8,219.72-1,781.66

Finding the Fourth Proportional to 5,479.52, 8,219.72 and 1,781.66

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Solution

The fourth proportional to 5,479.52, 8,219.72 and 1,781.66 is: 2,672.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.52 : 8,219.72 = 1,781.66 : x
  2. Step 2: Convert to fraction form
    5,479.52/8,219.72 = 1,781.66/x
  3. Step 3: Cross multiply
    5,479.52x = 8,219.72 × 1,781.66
  4. Step 4: Simplify right side
    5,479.52x = 14,644,771.34
  5. Step 5: Solve for x
    x = 14,644,771.34/5,479.52
  6. Step 6: Final answer
    x = 2,672.64

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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.