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Finding the Fourth Proportional to 3,279.80, 4,920.24 and 1,088.21

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Solution

The fourth proportional to 3,279.80, 4,920.24 and 1,088.21 is: 1,632.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,279.80 : 4,920.24 = 1,088.21 : x
  2. Step 2: Convert to fraction form
    3,279.80/4,920.24 = 1,088.21/x
  3. Step 3: Cross multiply
    3,279.80x = 4,920.24 × 1,088.21
  4. Step 4: Simplify right side
    3,279.80x = 5,354,254.37
  5. Step 5: Solve for x
    x = 5,354,254.37/3,279.80
  6. Step 6: Final answer
    x = 1,632.49

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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.