Home / 2,159.12-3,233.40-1,005.20

Finding the Fourth Proportional to 2,159.12, 3,233.40 and 1,005.20

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Solution

The fourth proportional to 2,159.12, 3,233.40 and 1,005.20 is: 1,505.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159.12 : 3,233.40 = 1,005.20 : x
  2. Step 2: Convert to fraction form
    2,159.12/3,233.40 = 1,005.20/x
  3. Step 3: Cross multiply
    2,159.12x = 3,233.40 × 1,005.20
  4. Step 4: Simplify right side
    2,159.12x = 3,250,213.68
  5. Step 5: Solve for x
    x = 3,250,213.68/2,159.12
  6. Step 6: Final answer
    x = 1,505.34

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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.