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Finding the Fourth Proportional to 3,553.46, 5,330.19 and 1,820.98

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Solution

The fourth proportional to 3,553.46, 5,330.19 and 1,820.98 is: 2,731.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,553.46 : 5,330.19 = 1,820.98 : x
  2. Step 2: Convert to fraction form
    3,553.46/5,330.19 = 1,820.98/x
  3. Step 3: Cross multiply
    3,553.46x = 5,330.19 × 1,820.98
  4. Step 4: Simplify right side
    3,553.46x = 9,706,169.39
  5. Step 5: Solve for x
    x = 9,706,169.39/3,553.46
  6. Step 6: Final answer
    x = 2,731.47

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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.