Home / 2,425.12-3,342-1,761.28

Finding the Fourth Proportional to 2,425.12, 3,342 and 1,761.28

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Solution

The fourth proportional to 2,425.12, 3,342 and 1,761.28 is: 2,427.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,425.12 : 3,342 = 1,761.28 : x
  2. Step 2: Convert to fraction form
    2,425.12/3,342 = 1,761.28/x
  3. Step 3: Cross multiply
    2,425.12x = 3,342 × 1,761.28
  4. Step 4: Simplify right side
    2,425.12x = 5,886,197.76
  5. Step 5: Solve for x
    x = 5,886,197.76/2,425.12
  6. Step 6: Final answer
    x = 2,427.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.