Home / 7,142.38-10,711.06-2,143.26

Finding the Fourth Proportional to 7,142.38, 10,711.06 and 2,143.26

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Solution

The fourth proportional to 7,142.38, 10,711.06 and 2,143.26 is: 3,214.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.38 : 10,711.06 = 2,143.26 : x
  2. Step 2: Convert to fraction form
    7,142.38/10,711.06 = 2,143.26/x
  3. Step 3: Cross multiply
    7,142.38x = 10,711.06 × 2,143.26
  4. Step 4: Simplify right side
    7,142.38x = 22,956,581.10
  5. Step 5: Solve for x
    x = 22,956,581.10/7,142.38
  6. Step 6: Final answer
    x = 3,214.14

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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.