Home / 4,087.40-6,138.30-3,165.20

Finding the Fourth Proportional to 4,087.40, 6,138.30 and 3,165.20

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Solution

The fourth proportional to 4,087.40, 6,138.30 and 3,165.20 is: 4,753.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,087.40 : 6,138.30 = 3,165.20 : x
  2. Step 2: Convert to fraction form
    4,087.40/6,138.30 = 3,165.20/x
  3. Step 3: Cross multiply
    4,087.40x = 6,138.30 × 3,165.20
  4. Step 4: Simplify right side
    4,087.40x = 19,428,947.16
  5. Step 5: Solve for x
    x = 19,428,947.16/4,087.40
  6. Step 6: Final answer
    x = 4,753.38

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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.