Home / 2,149.90-2,966.92-1,205.66

Finding the Fourth Proportional to 2,149.90, 2,966.92 and 1,205.66

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Solution

The fourth proportional to 2,149.90, 2,966.92 and 1,205.66 is: 1,663.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,149.90 : 2,966.92 = 1,205.66 : x
  2. Step 2: Convert to fraction form
    2,149.90/2,966.92 = 1,205.66/x
  3. Step 3: Cross multiply
    2,149.90x = 2,966.92 × 1,205.66
  4. Step 4: Simplify right side
    2,149.90x = 3,577,101.17
  5. Step 5: Solve for x
    x = 3,577,101.17/2,149.90
  6. Step 6: Final answer
    x = 1,663.85

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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.