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Finding the Fourth Proportional to 3,243.70, 4,870.05 and 2,080.90

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Solution

The fourth proportional to 3,243.70, 4,870.05 and 2,080.90 is: 3,124.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,243.70 : 4,870.05 = 2,080.90 : x
  2. Step 2: Convert to fraction form
    3,243.70/4,870.05 = 2,080.90/x
  3. Step 3: Cross multiply
    3,243.70x = 4,870.05 × 2,080.90
  4. Step 4: Simplify right side
    3,243.70x = 10,134,087.05
  5. Step 5: Solve for x
    x = 10,134,087.05/3,243.70
  6. Step 6: Final answer
    x = 3,124.24

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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.