Home / 1,306.20-1,966.41-1,127.64

Finding the Fourth Proportional to 1,306.20, 1,966.41 and 1,127.64

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Solution

The fourth proportional to 1,306.20, 1,966.41 and 1,127.64 is: 1,697.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306.20 : 1,966.41 = 1,127.64 : x
  2. Step 2: Convert to fraction form
    1,306.20/1,966.41 = 1,127.64/x
  3. Step 3: Cross multiply
    1,306.20x = 1,966.41 × 1,127.64
  4. Step 4: Simplify right side
    1,306.20x = 2,217,402.57
  5. Step 5: Solve for x
    x = 2,217,402.57/1,306.20
  6. Step 6: Final answer
    x = 1,697.60

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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.