Home / 2,142.42-2,954.94-1,397.04

Finding the Fourth Proportional to 2,142.42, 2,954.94 and 1,397.04

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Solution

The fourth proportional to 2,142.42, 2,954.94 and 1,397.04 is: 1,926.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.42 : 2,954.94 = 1,397.04 : x
  2. Step 2: Convert to fraction form
    2,142.42/2,954.94 = 1,397.04/x
  3. Step 3: Cross multiply
    2,142.42x = 2,954.94 × 1,397.04
  4. Step 4: Simplify right side
    2,142.42x = 4,128,169.38
  5. Step 5: Solve for x
    x = 4,128,169.38/2,142.42
  6. Step 6: Final answer
    x = 1,926.87

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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.