Home / 3,177.20-4,383.12-1,916.96

Finding the Fourth Proportional to 3,177.20, 4,383.12 and 1,916.96

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Solution

The fourth proportional to 3,177.20, 4,383.12 and 1,916.96 is: 2,644.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,177.20 : 4,383.12 = 1,916.96 : x
  2. Step 2: Convert to fraction form
    3,177.20/4,383.12 = 1,916.96/x
  3. Step 3: Cross multiply
    3,177.20x = 4,383.12 × 1,916.96
  4. Step 4: Simplify right side
    3,177.20x = 8,402,265.72
  5. Step 5: Solve for x
    x = 8,402,265.72/3,177.20
  6. Step 6: Final answer
    x = 2,644.55

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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.