Home / 4,085.11-6,128.23-1,311.13

Finding the Fourth Proportional to 4,085.11, 6,128.23 and 1,311.13

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Solution

The fourth proportional to 4,085.11, 6,128.23 and 1,311.13 is: 1,966.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,085.11 : 6,128.23 = 1,311.13 : x
  2. Step 2: Convert to fraction form
    4,085.11/6,128.23 = 1,311.13/x
  3. Step 3: Cross multiply
    4,085.11x = 6,128.23 × 1,311.13
  4. Step 4: Simplify right side
    4,085.11x = 8,034,906.20
  5. Step 5: Solve for x
    x = 8,034,906.20/4,085.11
  6. Step 6: Final answer
    x = 1,966.88

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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.