Home / 3,945.11-5,444.21-2,152.61

Finding the Fourth Proportional to 3,945.11, 5,444.21 and 2,152.61

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Solution

The fourth proportional to 3,945.11, 5,444.21 and 2,152.61 is: 2,970.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.11 : 5,444.21 = 2,152.61 : x
  2. Step 2: Convert to fraction form
    3,945.11/5,444.21 = 2,152.61/x
  3. Step 3: Cross multiply
    3,945.11x = 5,444.21 × 2,152.61
  4. Step 4: Simplify right side
    3,945.11x = 11,719,259.46
  5. Step 5: Solve for x
    x = 11,719,259.46/3,945.11
  6. Step 6: Final answer
    x = 2,970.58

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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.