Home / 2,148.24-3,220.50-915.48

Finding the Fourth Proportional to 2,148.24, 3,220.50 and 915.48

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Solution

The fourth proportional to 2,148.24, 3,220.50 and 915.48 is: 1,372.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.24 : 3,220.50 = 915.48 : x
  2. Step 2: Convert to fraction form
    2,148.24/3,220.50 = 915.48/x
  3. Step 3: Cross multiply
    2,148.24x = 3,220.50 × 915.48
  4. Step 4: Simplify right side
    2,148.24x = 2,948,303.34
  5. Step 5: Solve for x
    x = 2,948,303.34/2,148.24
  6. Step 6: Final answer
    x = 1,372.43

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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.