Home / 3,423.64-5,135.49-1,115.14

Finding the Fourth Proportional to 3,423.64, 5,135.49 and 1,115.14

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Solution

The fourth proportional to 3,423.64, 5,135.49 and 1,115.14 is: 1,672.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,423.64 : 5,135.49 = 1,115.14 : x
  2. Step 2: Convert to fraction form
    3,423.64/5,135.49 = 1,115.14/x
  3. Step 3: Cross multiply
    3,423.64x = 5,135.49 × 1,115.14
  4. Step 4: Simplify right side
    3,423.64x = 5,726,790.32
  5. Step 5: Solve for x
    x = 5,726,790.32/3,423.64
  6. Step 6: Final answer
    x = 1,672.72

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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.