Home / 2,876.20-4,311.66-927.40

Finding the Fourth Proportional to 2,876.20, 4,311.66 and 927.40

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Solution

The fourth proportional to 2,876.20, 4,311.66 and 927.40 is: 1,390.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,876.20 : 4,311.66 = 927.40 : x
  2. Step 2: Convert to fraction form
    2,876.20/4,311.66 = 927.40/x
  3. Step 3: Cross multiply
    2,876.20x = 4,311.66 × 927.40
  4. Step 4: Simplify right side
    2,876.20x = 3,998,633.48
  5. Step 5: Solve for x
    x = 3,998,633.48/2,876.20
  6. Step 6: Final answer
    x = 1,390.25

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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.