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Finding the Fourth Proportional to 3,546.99, 5,320.47 and 1,081.80

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Solution

The fourth proportional to 3,546.99, 5,320.47 and 1,081.80 is: 1,622.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,546.99 : 5,320.47 = 1,081.80 : x
  2. Step 2: Convert to fraction form
    3,546.99/5,320.47 = 1,081.80/x
  3. Step 3: Cross multiply
    3,546.99x = 5,320.47 × 1,081.80
  4. Step 4: Simplify right side
    3,546.99x = 5,755,680.39
  5. Step 5: Solve for x
    x = 5,755,680.39/3,546.99
  6. Step 6: Final answer
    x = 1,622.70

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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.