Home / 4,078.18-5,627.78-2,215.18

Finding the Fourth Proportional to 4,078.18, 5,627.78 and 2,215.18

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Solution

The fourth proportional to 4,078.18, 5,627.78 and 2,215.18 is: 3,056.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,078.18 : 5,627.78 = 2,215.18 : x
  2. Step 2: Convert to fraction form
    4,078.18/5,627.78 = 2,215.18/x
  3. Step 3: Cross multiply
    4,078.18x = 5,627.78 × 2,215.18
  4. Step 4: Simplify right side
    4,078.18x = 12,466,545.70
  5. Step 5: Solve for x
    x = 12,466,545.70/4,078.18
  6. Step 6: Final answer
    x = 3,056.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.