Home / 2,148.88-3,224.23-915.96

Finding the Fourth Proportional to 2,148.88, 3,224.23 and 915.96

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Solution

The fourth proportional to 2,148.88, 3,224.23 and 915.96 is: 1,374.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.88 : 3,224.23 = 915.96 : x
  2. Step 2: Convert to fraction form
    2,148.88/3,224.23 = 915.96/x
  3. Step 3: Cross multiply
    2,148.88x = 3,224.23 × 915.96
  4. Step 4: Simplify right side
    2,148.88x = 2,953,259.95
  5. Step 5: Solve for x
    x = 2,953,259.95/2,148.88
  6. Step 6: Final answer
    x = 1,374.33

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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.