Home / 5,613.60-8,420.40-4,711.46

Finding the Fourth Proportional to 5,613.60, 8,420.40 and 4,711.46

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Solution

The fourth proportional to 5,613.60, 8,420.40 and 4,711.46 is: 7,067.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,613.60 : 8,420.40 = 4,711.46 : x
  2. Step 2: Convert to fraction form
    5,613.60/8,420.40 = 4,711.46/x
  3. Step 3: Cross multiply
    5,613.60x = 8,420.40 × 4,711.46
  4. Step 4: Simplify right side
    5,613.60x = 39,672,377.78
  5. Step 5: Solve for x
    x = 39,672,377.78/5,613.60
  6. Step 6: Final answer
    x = 7,067.19

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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.