Home / 2,720.18-4,079.61-1,257.94

Finding the Fourth Proportional to 2,720.18, 4,079.61 and 1,257.94

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Solution

The fourth proportional to 2,720.18, 4,079.61 and 1,257.94 is: 1,886.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.18 : 4,079.61 = 1,257.94 : x
  2. Step 2: Convert to fraction form
    2,720.18/4,079.61 = 1,257.94/x
  3. Step 3: Cross multiply
    2,720.18x = 4,079.61 × 1,257.94
  4. Step 4: Simplify right side
    2,720.18x = 5,131,904.60
  5. Step 5: Solve for x
    x = 5,131,904.60/2,720.18
  6. Step 6: Final answer
    x = 1,886.60

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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.