Home / 8,680.12-13,018.94-3,132.70

Finding the Fourth Proportional to 8,680.12, 13,018.94 and 3,132.70

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Solution

The fourth proportional to 8,680.12, 13,018.94 and 3,132.70 is: 4,698.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680.12 : 13,018.94 = 3,132.70 : x
  2. Step 2: Convert to fraction form
    8,680.12/13,018.94 = 3,132.70/x
  3. Step 3: Cross multiply
    8,680.12x = 13,018.94 × 3,132.70
  4. Step 4: Simplify right side
    8,680.12x = 40,784,433.34
  5. Step 5: Solve for x
    x = 40,784,433.34/8,680.12
  6. Step 6: Final answer
    x = 4,698.60

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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.