Home / 3,947.63-5,921.46-1,639.13

Finding the Fourth Proportional to 3,947.63, 5,921.46 and 1,639.13

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Solution

The fourth proportional to 3,947.63, 5,921.46 and 1,639.13 is: 2,458.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.63 : 5,921.46 = 1,639.13 : x
  2. Step 2: Convert to fraction form
    3,947.63/5,921.46 = 1,639.13/x
  3. Step 3: Cross multiply
    3,947.63x = 5,921.46 × 1,639.13
  4. Step 4: Simplify right side
    3,947.63x = 9,706,013.12
  5. Step 5: Solve for x
    x = 9,706,013.12/3,947.63
  6. Step 6: Final answer
    x = 2,458.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.