Home / 2,612.16-3,918.24-2,178.54

Finding the Fourth Proportional to 2,612.16, 3,918.24 and 2,178.54

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Solution

The fourth proportional to 2,612.16, 3,918.24 and 2,178.54 is: 3,267.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,612.16 : 3,918.24 = 2,178.54 : x
  2. Step 2: Convert to fraction form
    2,612.16/3,918.24 = 2,178.54/x
  3. Step 3: Cross multiply
    2,612.16x = 3,918.24 × 2,178.54
  4. Step 4: Simplify right side
    2,612.16x = 8,536,042.57
  5. Step 5: Solve for x
    x = 8,536,042.57/2,612.16
  6. Step 6: Final answer
    x = 3,267.81

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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.