Home / 3,713.15-5,123.22-2,278.28

Finding the Fourth Proportional to 3,713.15, 5,123.22 and 2,278.28

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Solution

The fourth proportional to 3,713.15, 5,123.22 and 2,278.28 is: 3,143.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,713.15 : 5,123.22 = 2,278.28 : x
  2. Step 2: Convert to fraction form
    3,713.15/5,123.22 = 2,278.28/x
  3. Step 3: Cross multiply
    3,713.15x = 5,123.22 × 2,278.28
  4. Step 4: Simplify right side
    3,713.15x = 11,672,104.05
  5. Step 5: Solve for x
    x = 11,672,104.05/3,713.15
  6. Step 6: Final answer
    x = 3,143.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.