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Finding the Fourth Proportional to 8,859.11, 13,290.71 and 3,015.72

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Solution

The fourth proportional to 8,859.11, 13,290.71 and 3,015.72 is: 4,524.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,859.11 : 13,290.71 = 3,015.72 : x
  2. Step 2: Convert to fraction form
    8,859.11/13,290.71 = 3,015.72/x
  3. Step 3: Cross multiply
    8,859.11x = 13,290.71 × 3,015.72
  4. Step 4: Simplify right side
    8,859.11x = 40,081,044.88
  5. Step 5: Solve for x
    x = 40,081,044.88/8,859.11
  6. Step 6: Final answer
    x = 4,524.28

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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.