Home / 2,419.92-3,631.20-959.12

Finding the Fourth Proportional to 2,419.92, 3,631.20 and 959.12

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Solution

The fourth proportional to 2,419.92, 3,631.20 and 959.12 is: 1,439.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,419.92 : 3,631.20 = 959.12 : x
  2. Step 2: Convert to fraction form
    2,419.92/3,631.20 = 959.12/x
  3. Step 3: Cross multiply
    2,419.92x = 3,631.20 × 959.12
  4. Step 4: Simplify right side
    2,419.92x = 3,482,756.54
  5. Step 5: Solve for x
    x = 3,482,756.54/2,419.92
  6. Step 6: Final answer
    x = 1,439.20

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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.