Home / 4,082.40-5,637.60-2,689.20

Finding the Fourth Proportional to 4,082.40, 5,637.60 and 2,689.20

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Solution

The fourth proportional to 4,082.40, 5,637.60 and 2,689.20 is: 3,713.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,082.40 : 5,637.60 = 2,689.20 : x
  2. Step 2: Convert to fraction form
    4,082.40/5,637.60 = 2,689.20/x
  3. Step 3: Cross multiply
    4,082.40x = 5,637.60 × 2,689.20
  4. Step 4: Simplify right side
    4,082.40x = 15,160,633.92
  5. Step 5: Solve for x
    x = 15,160,633.92/4,082.40
  6. Step 6: Final answer
    x = 3,713.66

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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.