Home / 3,126.47-4,691.23-1,278.10

Finding the Fourth Proportional to 3,126.47, 4,691.23 and 1,278.10

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Solution

The fourth proportional to 3,126.47, 4,691.23 and 1,278.10 is: 1,917.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.47 : 4,691.23 = 1,278.10 : x
  2. Step 2: Convert to fraction form
    3,126.47/4,691.23 = 1,278.10/x
  3. Step 3: Cross multiply
    3,126.47x = 4,691.23 × 1,278.10
  4. Step 4: Simplify right side
    3,126.47x = 5,995,861.06
  5. Step 5: Solve for x
    x = 5,995,861.06/3,126.47
  6. Step 6: Final answer
    x = 1,917.77

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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.