Home / 3,921.55-5,882.84-1,148.20

Finding the Fourth Proportional to 3,921.55, 5,882.84 and 1,148.20

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Solution

The fourth proportional to 3,921.55, 5,882.84 and 1,148.20 is: 1,722.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.55 : 5,882.84 = 1,148.20 : x
  2. Step 2: Convert to fraction form
    3,921.55/5,882.84 = 1,148.20/x
  3. Step 3: Cross multiply
    3,921.55x = 5,882.84 × 1,148.20
  4. Step 4: Simplify right side
    3,921.55x = 6,754,665.05
  5. Step 5: Solve for x
    x = 6,754,665.05/3,921.55
  6. Step 6: Final answer
    x = 1,722.45

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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.