Home / 1,481.20-2,044.08-818.10

Finding the Fourth Proportional to 1,481.20, 2,044.08 and 818.10

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Solution

The fourth proportional to 1,481.20, 2,044.08 and 818.10 is: 1,128.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.20 : 2,044.08 = 818.10 : x
  2. Step 2: Convert to fraction form
    1,481.20/2,044.08 = 818.10/x
  3. Step 3: Cross multiply
    1,481.20x = 2,044.08 × 818.10
  4. Step 4: Simplify right side
    1,481.20x = 1,672,261.85
  5. Step 5: Solve for x
    x = 1,672,261.85/1,481.20
  6. Step 6: Final answer
    x = 1,128.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.