Home / 6,138.40-9,214.80-3,956.20

Finding the Fourth Proportional to 6,138.40, 9,214.80 and 3,956.20

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Solution

The fourth proportional to 6,138.40, 9,214.80 and 3,956.20 is: 5,938.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,138.40 : 9,214.80 = 3,956.20 : x
  2. Step 2: Convert to fraction form
    6,138.40/9,214.80 = 3,956.20/x
  3. Step 3: Cross multiply
    6,138.40x = 9,214.80 × 3,956.20
  4. Step 4: Simplify right side
    6,138.40x = 36,455,591.76
  5. Step 5: Solve for x
    x = 36,455,591.76/6,138.40
  6. Step 6: Final answer
    x = 5,938.94

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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.