Home / 3,177.39-4,385.22-1,919.16

Finding the Fourth Proportional to 3,177.39, 4,385.22 and 1,919.16

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Solution

The fourth proportional to 3,177.39, 4,385.22 and 1,919.16 is: 2,648.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,177.39 : 4,385.22 = 1,919.16 : x
  2. Step 2: Convert to fraction form
    3,177.39/4,385.22 = 1,919.16/x
  3. Step 3: Cross multiply
    3,177.39x = 4,385.22 × 1,919.16
  4. Step 4: Simplify right side
    3,177.39x = 8,415,938.82
  5. Step 5: Solve for x
    x = 8,415,938.82/3,177.39
  6. Step 6: Final answer
    x = 2,648.70

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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.