Home / 2,612.08-3,920.19-1,152.28

Finding the Fourth Proportional to 2,612.08, 3,920.19 and 1,152.28

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Solution

The fourth proportional to 2,612.08, 3,920.19 and 1,152.28 is: 1,729.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,612.08 : 3,920.19 = 1,152.28 : x
  2. Step 2: Convert to fraction form
    2,612.08/3,920.19 = 1,152.28/x
  3. Step 3: Cross multiply
    2,612.08x = 3,920.19 × 1,152.28
  4. Step 4: Simplify right side
    2,612.08x = 4,517,156.53
  5. Step 5: Solve for x
    x = 4,517,156.53/2,612.08
  6. Step 6: Final answer
    x = 1,729.33

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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.