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Finding the Fourth Proportional to 3,553.20, 4,903.05 and 1,981.14

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Solution

The fourth proportional to 3,553.20, 4,903.05 and 1,981.14 is: 2,733.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,553.20 : 4,903.05 = 1,981.14 : x
  2. Step 2: Convert to fraction form
    3,553.20/4,903.05 = 1,981.14/x
  3. Step 3: Cross multiply
    3,553.20x = 4,903.05 × 1,981.14
  4. Step 4: Simplify right side
    3,553.20x = 9,713,628.48
  5. Step 5: Solve for x
    x = 9,713,628.48/3,553.20
  6. Step 6: Final answer
    x = 2,733.77

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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.