Home / 3,947.30-5,913.15-2,561.60

Finding the Fourth Proportional to 3,947.30, 5,913.15 and 2,561.60

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Solution

The fourth proportional to 3,947.30, 5,913.15 and 2,561.60 is: 3,837.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.30 : 5,913.15 = 2,561.60 : x
  2. Step 2: Convert to fraction form
    3,947.30/5,913.15 = 2,561.60/x
  3. Step 3: Cross multiply
    3,947.30x = 5,913.15 × 2,561.60
  4. Step 4: Simplify right side
    3,947.30x = 15,147,125.04
  5. Step 5: Solve for x
    x = 15,147,125.04/3,947.30
  6. Step 6: Final answer
    x = 3,837.34

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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.