Home / 1,335.12-2,001.99-512.76

Finding the Fourth Proportional to 1,335.12, 2,001.99 and 512.76

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Solution

The fourth proportional to 1,335.12, 2,001.99 and 512.76 is: 768.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.12 : 2,001.99 = 512.76 : x
  2. Step 2: Convert to fraction form
    1,335.12/2,001.99 = 512.76/x
  3. Step 3: Cross multiply
    1,335.12x = 2,001.99 × 512.76
  4. Step 4: Simplify right side
    1,335.12x = 1,026,540.39
  5. Step 5: Solve for x
    x = 1,026,540.39/1,335.12
  6. Step 6: Final answer
    x = 768.88

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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.