Home / 2,225.31-3,340.80-1,815.25

Finding the Fourth Proportional to 2,225.31, 3,340.80 and 1,815.25

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Solution

The fourth proportional to 2,225.31, 3,340.80 and 1,815.25 is: 2,725.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.31 : 3,340.80 = 1,815.25 : x
  2. Step 2: Convert to fraction form
    2,225.31/3,340.80 = 1,815.25/x
  3. Step 3: Cross multiply
    2,225.31x = 3,340.80 × 1,815.25
  4. Step 4: Simplify right side
    2,225.31x = 6,064,387.20
  5. Step 5: Solve for x
    x = 6,064,387.20/2,225.31
  6. Step 6: Final answer
    x = 2,725.19

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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.