Home / 3,177.78-4,385.16-1,761.42

Finding the Fourth Proportional to 3,177.78, 4,385.16 and 1,761.42

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Solution

The fourth proportional to 3,177.78, 4,385.16 and 1,761.42 is: 2,430.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,177.78 : 4,385.16 = 1,761.42 : x
  2. Step 2: Convert to fraction form
    3,177.78/4,385.16 = 1,761.42/x
  3. Step 3: Cross multiply
    3,177.78x = 4,385.16 × 1,761.42
  4. Step 4: Simplify right side
    3,177.78x = 7,724,108.53
  5. Step 5: Solve for x
    x = 7,724,108.53/3,177.78
  6. Step 6: Final answer
    x = 2,430.66

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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.