Home / 2,778.10-4,167.15-2,259.70

Finding the Fourth Proportional to 2,778.10, 4,167.15 and 2,259.70

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Solution

The fourth proportional to 2,778.10, 4,167.15 and 2,259.70 is: 3,389.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.10 : 4,167.15 = 2,259.70 : x
  2. Step 2: Convert to fraction form
    2,778.10/4,167.15 = 2,259.70/x
  3. Step 3: Cross multiply
    2,778.10x = 4,167.15 × 2,259.70
  4. Step 4: Simplify right side
    2,778.10x = 9,416,508.86
  5. Step 5: Solve for x
    x = 9,416,508.86/2,778.10
  6. Step 6: Final answer
    x = 3,389.55

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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.