Home / 2,719.10-4,078.12-1,158.80

Finding the Fourth Proportional to 2,719.10, 4,078.12 and 1,158.80

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Solution

The fourth proportional to 2,719.10, 4,078.12 and 1,158.80 is: 1,737.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,719.10 : 4,078.12 = 1,158.80 : x
  2. Step 2: Convert to fraction form
    2,719.10/4,078.12 = 1,158.80/x
  3. Step 3: Cross multiply
    2,719.10x = 4,078.12 × 1,158.80
  4. Step 4: Simplify right side
    2,719.10x = 4,725,725.46
  5. Step 5: Solve for x
    x = 4,725,725.46/2,719.10
  6. Step 6: Final answer
    x = 1,737.97

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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.