Home / 7,142.28-10,712.60-1,948.56

Finding the Fourth Proportional to 7,142.28, 10,712.60 and 1,948.56

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Solution

The fourth proportional to 7,142.28, 10,712.60 and 1,948.56 is: 2,922.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.28 : 10,712.60 = 1,948.56 : x
  2. Step 2: Convert to fraction form
    7,142.28/10,712.60 = 1,948.56/x
  3. Step 3: Cross multiply
    7,142.28x = 10,712.60 × 1,948.56
  4. Step 4: Simplify right side
    7,142.28x = 20,874,143.86
  5. Step 5: Solve for x
    x = 20,874,143.86/7,142.28
  6. Step 6: Final answer
    x = 2,922.62

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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.