Home / 2,177.78-3,267.88-945.20

Finding the Fourth Proportional to 2,177.78, 3,267.88 and 945.20

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Solution

The fourth proportional to 2,177.78, 3,267.88 and 945.20 is: 1,418.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,177.78 : 3,267.88 = 945.20 : x
  2. Step 2: Convert to fraction form
    2,177.78/3,267.88 = 945.20/x
  3. Step 3: Cross multiply
    2,177.78x = 3,267.88 × 945.20
  4. Step 4: Simplify right side
    2,177.78x = 3,088,800.18
  5. Step 5: Solve for x
    x = 3,088,800.18/2,177.78
  6. Step 6: Final answer
    x = 1,418.33

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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.