Home / 2,881.20-4,320.92-800.66

Finding the Fourth Proportional to 2,881.20, 4,320.92 and 800.66

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Solution

The fourth proportional to 2,881.20, 4,320.92 and 800.66 is: 1,200.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,881.20 : 4,320.92 = 800.66 : x
  2. Step 2: Convert to fraction form
    2,881.20/4,320.92 = 800.66/x
  3. Step 3: Cross multiply
    2,881.20x = 4,320.92 × 800.66
  4. Step 4: Simplify right side
    2,881.20x = 3,459,587.81
  5. Step 5: Solve for x
    x = 3,459,587.81/2,881.20
  6. Step 6: Final answer
    x = 1,200.75

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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.