Home / 8,610.71-12,918.18-3,680.74

Finding the Fourth Proportional to 8,610.71, 12,918.18 and 3,680.74

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Solution

The fourth proportional to 8,610.71, 12,918.18 and 3,680.74 is: 5,522.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,610.71 : 12,918.18 = 3,680.74 : x
  2. Step 2: Convert to fraction form
    8,610.71/12,918.18 = 3,680.74/x
  3. Step 3: Cross multiply
    8,610.71x = 12,918.18 × 3,680.74
  4. Step 4: Simplify right side
    8,610.71x = 47,548,491.80
  5. Step 5: Solve for x
    x = 47,548,491.80/8,610.71
  6. Step 6: Final answer
    x = 5,522.02

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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.