Home / 1,581.20-2,177.04-1,207

Finding the Fourth Proportional to 1,581.20, 2,177.04 and 1,207

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Solution

The fourth proportional to 1,581.20, 2,177.04 and 1,207 is: 1,661.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.20 : 2,177.04 = 1,207 : x
  2. Step 2: Convert to fraction form
    1,581.20/2,177.04 = 1,207/x
  3. Step 3: Cross multiply
    1,581.20x = 2,177.04 × 1,207
  4. Step 4: Simplify right side
    1,581.20x = 2,627,687.28
  5. Step 5: Solve for x
    x = 2,627,687.28/1,581.20
  6. Step 6: Final answer
    x = 1,661.83

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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.