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Finding the Fourth Proportional to 6,139.42, 9,209.13 and 2,850.72

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Solution

The fourth proportional to 6,139.42, 9,209.13 and 2,850.72 is: 4,276.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,139.42 : 9,209.13 = 2,850.72 : x
  2. Step 2: Convert to fraction form
    6,139.42/9,209.13 = 2,850.72/x
  3. Step 3: Cross multiply
    6,139.42x = 9,209.13 × 2,850.72
  4. Step 4: Simplify right side
    6,139.42x = 26,252,651.07
  5. Step 5: Solve for x
    x = 26,252,651.07/6,139.42
  6. Step 6: Final answer
    x = 4,276.08

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Half scale
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Double scale
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Similar ratio
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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.