Home / 2,756.44-4,129.19-1,291.15

Finding the Fourth Proportional to 2,756.44, 4,129.19 and 1,291.15

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Solution

The fourth proportional to 2,756.44, 4,129.19 and 1,291.15 is: 1,934.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,756.44 : 4,129.19 = 1,291.15 : x
  2. Step 2: Convert to fraction form
    2,756.44/4,129.19 = 1,291.15/x
  3. Step 3: Cross multiply
    2,756.44x = 4,129.19 × 1,291.15
  4. Step 4: Simplify right side
    2,756.44x = 5,331,376.57
  5. Step 5: Solve for x
    x = 5,331,376.57/2,756.44
  6. Step 6: Final answer
    x = 1,934.16

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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.