Home / 8,387.17-12,582.12-3,122.20

Finding the Fourth Proportional to 8,387.17, 12,582.12 and 3,122.20

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Solution

The fourth proportional to 8,387.17, 12,582.12 and 3,122.20 is: 4,683.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.17 : 12,582.12 = 3,122.20 : x
  2. Step 2: Convert to fraction form
    8,387.17/12,582.12 = 3,122.20/x
  3. Step 3: Cross multiply
    8,387.17x = 12,582.12 × 3,122.20
  4. Step 4: Simplify right side
    8,387.17x = 39,283,895.06
  5. Step 5: Solve for x
    x = 39,283,895.06/8,387.17
  6. Step 6: Final answer
    x = 4,683.81

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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.