Home / 3,747.24-5,171.95-2,155.00

Finding the Fourth Proportional to 3,747.24, 5,171.95 and 2,155.00

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Solution

The fourth proportional to 3,747.24, 5,171.95 and 2,155.00 is: 2,974.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,747.24 : 5,171.95 = 2,155.00 : x
  2. Step 2: Convert to fraction form
    3,747.24/5,171.95 = 2,155.00/x
  3. Step 3: Cross multiply
    3,747.24x = 5,171.95 × 2,155.00
  4. Step 4: Simplify right side
    3,747.24x = 11,145,562.49
  5. Step 5: Solve for x
    x = 11,145,562.49/3,747.24
  6. Step 6: Final answer
    x = 2,974.34

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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.