Home / 3,908.60-5,864.10-3,087.20

Finding the Fourth Proportional to 3,908.60, 5,864.10 and 3,087.20

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Solution

The fourth proportional to 3,908.60, 5,864.10 and 3,087.20 is: 4,631.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.60 : 5,864.10 = 3,087.20 : x
  2. Step 2: Convert to fraction form
    3,908.60/5,864.10 = 3,087.20/x
  3. Step 3: Cross multiply
    3,908.60x = 5,864.10 × 3,087.20
  4. Step 4: Simplify right side
    3,908.60x = 18,103,649.52
  5. Step 5: Solve for x
    x = 18,103,649.52/3,908.60
  6. Step 6: Final answer
    x = 4,631.75

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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.