Home / 2,515.46-3,778.65-2,187.41

Finding the Fourth Proportional to 2,515.46, 3,778.65 and 2,187.41

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Solution

The fourth proportional to 2,515.46, 3,778.65 and 2,187.41 is: 3,285.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,515.46 : 3,778.65 = 2,187.41 : x
  2. Step 2: Convert to fraction form
    2,515.46/3,778.65 = 2,187.41/x
  3. Step 3: Cross multiply
    2,515.46x = 3,778.65 × 2,187.41
  4. Step 4: Simplify right side
    2,515.46x = 8,265,437.90
  5. Step 5: Solve for x
    x = 8,265,437.90/2,515.46
  6. Step 6: Final answer
    x = 3,285.86

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1.5x scale

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.