Home / 2,836.55-4,251.92-986.15

Finding the Fourth Proportional to 2,836.55, 4,251.92 and 986.15

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Solution

The fourth proportional to 2,836.55, 4,251.92 and 986.15 is: 1,478.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,836.55 : 4,251.92 = 986.15 : x
  2. Step 2: Convert to fraction form
    2,836.55/4,251.92 = 986.15/x
  3. Step 3: Cross multiply
    2,836.55x = 4,251.92 × 986.15
  4. Step 4: Simplify right side
    2,836.55x = 4,193,007.18
  5. Step 5: Solve for x
    x = 4,193,007.18/2,836.55
  6. Step 6: Final answer
    x = 1,478.21

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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.