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Finding the Fourth Proportional to 6,061.40, 9,084.90 and 3,138.20

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Solution

The fourth proportional to 6,061.40, 9,084.90 and 3,138.20 is: 4,703.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,061.40 : 9,084.90 = 3,138.20 : x
  2. Step 2: Convert to fraction form
    6,061.40/9,084.90 = 3,138.20/x
  3. Step 3: Cross multiply
    6,061.40x = 9,084.90 × 3,138.20
  4. Step 4: Simplify right side
    6,061.40x = 28,510,233.18
  5. Step 5: Solve for x
    x = 28,510,233.18/6,061.40
  6. Step 6: Final answer
    x = 4,703.57

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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.