Home / 2,811.60-4,215.31-1,349.36

Finding the Fourth Proportional to 2,811.60, 4,215.31 and 1,349.36

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Solution

The fourth proportional to 2,811.60, 4,215.31 and 1,349.36 is: 2,023.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.60 : 4,215.31 = 1,349.36 : x
  2. Step 2: Convert to fraction form
    2,811.60/4,215.31 = 1,349.36/x
  3. Step 3: Cross multiply
    2,811.60x = 4,215.31 × 1,349.36
  4. Step 4: Simplify right side
    2,811.60x = 5,687,970.70
  5. Step 5: Solve for x
    x = 5,687,970.70/2,811.60
  6. Step 6: Final answer
    x = 2,023.04

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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.