Home / 1,515.20-2,272.80-960.35

Finding the Fourth Proportional to 1,515.20, 2,272.80 and 960.35

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Solution

The fourth proportional to 1,515.20, 2,272.80 and 960.35 is: 1,440.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.20 : 2,272.80 = 960.35 : x
  2. Step 2: Convert to fraction form
    1,515.20/2,272.80 = 960.35/x
  3. Step 3: Cross multiply
    1,515.20x = 2,272.80 × 960.35
  4. Step 4: Simplify right side
    1,515.20x = 2,182,683.48
  5. Step 5: Solve for x
    x = 2,182,683.48/1,515.20
  6. Step 6: Final answer
    x = 1,440.53

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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.