Home / 10,474.28-15,711.42-3,078.74

Finding the Fourth Proportional to 10,474.28, 15,711.42 and 3,078.74

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Solution

The fourth proportional to 10,474.28, 15,711.42 and 3,078.74 is: 4,618.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,474.28 : 15,711.42 = 3,078.74 : x
  2. Step 2: Convert to fraction form
    10,474.28/15,711.42 = 3,078.74/x
  3. Step 3: Cross multiply
    10,474.28x = 15,711.42 × 3,078.74
  4. Step 4: Simplify right side
    10,474.28x = 48,371,283.26
  5. Step 5: Solve for x
    x = 48,371,283.26/10,474.28
  6. Step 6: Final answer
    x = 4,618.10

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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.