Home / 8,079.48-12,113.28-3,148.20

Finding the Fourth Proportional to 8,079.48, 12,113.28 and 3,148.20

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Solution

The fourth proportional to 8,079.48, 12,113.28 and 3,148.20 is: 4,719.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,079.48 : 12,113.28 = 3,148.20 : x
  2. Step 2: Convert to fraction form
    8,079.48/12,113.28 = 3,148.20/x
  3. Step 3: Cross multiply
    8,079.48x = 12,113.28 × 3,148.20
  4. Step 4: Simplify right side
    8,079.48x = 38,135,028.10
  5. Step 5: Solve for x
    x = 38,135,028.10/8,079.48
  6. Step 6: Final answer
    x = 4,719.99

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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.