Home / 2,874.60-4,311.96-926.88

Finding the Fourth Proportional to 2,874.60, 4,311.96 and 926.88

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Solution

The fourth proportional to 2,874.60, 4,311.96 and 926.88 is: 1,390.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,874.60 : 4,311.96 = 926.88 : x
  2. Step 2: Convert to fraction form
    2,874.60/4,311.96 = 926.88/x
  3. Step 3: Cross multiply
    2,874.60x = 4,311.96 × 926.88
  4. Step 4: Simplify right side
    2,874.60x = 3,996,669.48
  5. Step 5: Solve for x
    x = 3,996,669.48/2,874.60
  6. Step 6: Final answer
    x = 1,390.34

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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.