Home / 8,281.08-12,418.90-3,086.20

Finding the Fourth Proportional to 8,281.08, 12,418.90 and 3,086.20

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Solution

The fourth proportional to 8,281.08, 12,418.90 and 3,086.20 is: 4,628.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,281.08 : 12,418.90 = 3,086.20 : x
  2. Step 2: Convert to fraction form
    8,281.08/12,418.90 = 3,086.20/x
  3. Step 3: Cross multiply
    8,281.08x = 12,418.90 × 3,086.20
  4. Step 4: Simplify right side
    8,281.08x = 38,327,209.18
  5. Step 5: Solve for x
    x = 38,327,209.18/8,281.08
  6. Step 6: Final answer
    x = 4,628.29

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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.