Home / 8,668.59-13,001.45-3,120.90

Finding the Fourth Proportional to 8,668.59, 13,001.45 and 3,120.90

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Solution

The fourth proportional to 8,668.59, 13,001.45 and 3,120.90 is: 4,680.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.59 : 13,001.45 = 3,120.90 : x
  2. Step 2: Convert to fraction form
    8,668.59/13,001.45 = 3,120.90/x
  3. Step 3: Cross multiply
    8,668.59x = 13,001.45 × 3,120.90
  4. Step 4: Simplify right side
    8,668.59x = 40,576,209.70
  5. Step 5: Solve for x
    x = 40,576,209.70/8,668.59
  6. Step 6: Final answer
    x = 4,680.83

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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.