Home / 2,778.48-4,138.71-2,652.12

Finding the Fourth Proportional to 2,778.48, 4,138.71 and 2,652.12

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Solution

The fourth proportional to 2,778.48, 4,138.71 and 2,652.12 is: 3,950.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.48 : 4,138.71 = 2,652.12 : x
  2. Step 2: Convert to fraction form
    2,778.48/4,138.71 = 2,652.12/x
  3. Step 3: Cross multiply
    2,778.48x = 4,138.71 × 2,652.12
  4. Step 4: Simplify right side
    2,778.48x = 10,976,355.57
  5. Step 5: Solve for x
    x = 10,976,355.57/2,778.48
  6. Step 6: Final answer
    x = 3,950.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.