Home / 6,613.20-9,903.60-3,146.40

Finding the Fourth Proportional to 6,613.20, 9,903.60 and 3,146.40

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Solution

The fourth proportional to 6,613.20, 9,903.60 and 3,146.40 is: 4,711.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,613.20 : 9,903.60 = 3,146.40 : x
  2. Step 2: Convert to fraction form
    6,613.20/9,903.60 = 3,146.40/x
  3. Step 3: Cross multiply
    6,613.20x = 9,903.60 × 3,146.40
  4. Step 4: Simplify right side
    6,613.20x = 31,160,687.04
  5. Step 5: Solve for x
    x = 31,160,687.04/6,613.20
  6. Step 6: Final answer
    x = 4,711.89

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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.