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Finding the Fourth Proportional to 3,158.70, 4,361.34 and 2,040.30

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Solution

The fourth proportional to 3,158.70, 4,361.34 and 2,040.30 is: 2,817.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158.70 : 4,361.34 = 2,040.30 : x
  2. Step 2: Convert to fraction form
    3,158.70/4,361.34 = 2,040.30/x
  3. Step 3: Cross multiply
    3,158.70x = 4,361.34 × 2,040.30
  4. Step 4: Simplify right side
    3,158.70x = 8,898,442.00
  5. Step 5: Solve for x
    x = 8,898,442.00/3,158.70
  6. Step 6: Final answer
    x = 2,817.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.