Home / 2,149.53-2,966.30-1,218.03

Finding the Fourth Proportional to 2,149.53, 2,966.30 and 1,218.03

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Solution

The fourth proportional to 2,149.53, 2,966.30 and 1,218.03 is: 1,680.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,149.53 : 2,966.30 = 1,218.03 : x
  2. Step 2: Convert to fraction form
    2,149.53/2,966.30 = 1,218.03/x
  3. Step 3: Cross multiply
    2,149.53x = 2,966.30 × 1,218.03
  4. Step 4: Simplify right side
    2,149.53x = 3,613,036.30
  5. Step 5: Solve for x
    x = 3,613,036.30/2,149.53
  6. Step 6: Final answer
    x = 1,680.85

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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.