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Finding the Fourth Proportional to 8,809.36, 13,211.51 and 2,721.20

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Solution

The fourth proportional to 8,809.36, 13,211.51 and 2,721.20 is: 4,081.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.36 : 13,211.51 = 2,721.20 : x
  2. Step 2: Convert to fraction form
    8,809.36/13,211.51 = 2,721.20/x
  3. Step 3: Cross multiply
    8,809.36x = 13,211.51 × 2,721.20
  4. Step 4: Simplify right side
    8,809.36x = 35,951,081.35
  5. Step 5: Solve for x
    x = 35,951,081.35/8,809.36
  6. Step 6: Final answer
    x = 4,081.01

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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.