Home / 2,719.76-4,079.79-1,158.21

Finding the Fourth Proportional to 2,719.76, 4,079.79 and 1,158.21

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Solution

The fourth proportional to 2,719.76, 4,079.79 and 1,158.21 is: 1,737.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,719.76 : 4,079.79 = 1,158.21 : x
  2. Step 2: Convert to fraction form
    2,719.76/4,079.79 = 1,158.21/x
  3. Step 3: Cross multiply
    2,719.76x = 4,079.79 × 1,158.21
  4. Step 4: Simplify right side
    2,719.76x = 4,725,253.58
  5. Step 5: Solve for x
    x = 4,725,253.58/2,719.76
  6. Step 6: Final answer
    x = 1,737.38

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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.