Home / 2,515.66-3,766.48-1,280.41

Finding the Fourth Proportional to 2,515.66, 3,766.48 and 1,280.41

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Solution

The fourth proportional to 2,515.66, 3,766.48 and 1,280.41 is: 1,917.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,515.66 : 3,766.48 = 1,280.41 : x
  2. Step 2: Convert to fraction form
    2,515.66/3,766.48 = 1,280.41/x
  3. Step 3: Cross multiply
    2,515.66x = 3,766.48 × 1,280.41
  4. Step 4: Simplify right side
    2,515.66x = 4,822,638.66
  5. Step 5: Solve for x
    x = 4,822,638.66/2,515.66
  6. Step 6: Final answer
    x = 1,917.05

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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.