Home / 2,149.65-2,966.50-1,218.09

Finding the Fourth Proportional to 2,149.65, 2,966.50 and 1,218.09

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Solution

The fourth proportional to 2,149.65, 2,966.50 and 1,218.09 is: 1,680.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,149.65 : 2,966.50 = 1,218.09 : x
  2. Step 2: Convert to fraction form
    2,149.65/2,966.50 = 1,218.09/x
  3. Step 3: Cross multiply
    2,149.65x = 2,966.50 × 1,218.09
  4. Step 4: Simplify right side
    2,149.65x = 3,613,463.99
  5. Step 5: Solve for x
    x = 3,613,463.99/2,149.65
  6. Step 6: Final answer
    x = 1,680.95

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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.