Home / 1,340.30-2,020.46-1,251.08

Finding the Fourth Proportional to 1,340.30, 2,020.46 and 1,251.08

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Solution

The fourth proportional to 1,340.30, 2,020.46 and 1,251.08 is: 1,885.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340.30 : 2,020.46 = 1,251.08 : x
  2. Step 2: Convert to fraction form
    1,340.30/2,020.46 = 1,251.08/x
  3. Step 3: Cross multiply
    1,340.30x = 2,020.46 × 1,251.08
  4. Step 4: Simplify right side
    1,340.30x = 2,527,757.10
  5. Step 5: Solve for x
    x = 2,527,757.10/1,340.30
  6. Step 6: Final answer
    x = 1,885.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.