Home / 2,687.59-4,030.20-1,105.22

Finding the Fourth Proportional to 2,687.59, 4,030.20 and 1,105.22

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Solution

The fourth proportional to 2,687.59, 4,030.20 and 1,105.22 is: 1,657.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.59 : 4,030.20 = 1,105.22 : x
  2. Step 2: Convert to fraction form
    2,687.59/4,030.20 = 1,105.22/x
  3. Step 3: Cross multiply
    2,687.59x = 4,030.20 × 1,105.22
  4. Step 4: Simplify right side
    2,687.59x = 4,454,257.64
  5. Step 5: Solve for x
    x = 4,454,257.64/2,687.59
  6. Step 6: Final answer
    x = 1,657.34

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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.