Home / 2,656.40-3,983.96-1,115.92

Finding the Fourth Proportional to 2,656.40, 3,983.96 and 1,115.92

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Solution

The fourth proportional to 2,656.40, 3,983.96 and 1,115.92 is: 1,673.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,656.40 : 3,983.96 = 1,115.92 : x
  2. Step 2: Convert to fraction form
    2,656.40/3,983.96 = 1,115.92/x
  3. Step 3: Cross multiply
    2,656.40x = 3,983.96 × 1,115.92
  4. Step 4: Simplify right side
    2,656.40x = 4,445,780.64
  5. Step 5: Solve for x
    x = 4,445,780.64/2,656.40
  6. Step 6: Final answer
    x = 1,673.61

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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.