Home / 2,642.30-3,963.44-2,148.12

Finding the Fourth Proportional to 2,642.30, 3,963.44 and 2,148.12

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Solution

The fourth proportional to 2,642.30, 3,963.44 and 2,148.12 is: 3,222.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,642.30 : 3,963.44 = 2,148.12 : x
  2. Step 2: Convert to fraction form
    2,642.30/3,963.44 = 2,148.12/x
  3. Step 3: Cross multiply
    2,642.30x = 3,963.44 × 2,148.12
  4. Step 4: Simplify right side
    2,642.30x = 8,513,950.10
  5. Step 5: Solve for x
    x = 8,513,950.10/2,642.30
  6. Step 6: Final answer
    x = 3,222.18

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.