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Finding the Fourth Proportional to 3,674.80, 5,071.12 and 2,102.84

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Solution

The fourth proportional to 3,674.80, 5,071.12 and 2,102.84 is: 2,901.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,674.80 : 5,071.12 = 2,102.84 : x
  2. Step 2: Convert to fraction form
    3,674.80/5,071.12 = 2,102.84/x
  3. Step 3: Cross multiply
    3,674.80x = 5,071.12 × 2,102.84
  4. Step 4: Simplify right side
    3,674.80x = 10,663,753.98
  5. Step 5: Solve for x
    x = 10,663,753.98/3,674.80
  6. Step 6: Final answer
    x = 2,901.86

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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.