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Finding the Fourth Proportional to 8,820.86, 13,232.80 and 2,976.10

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Solution

The fourth proportional to 8,820.86, 13,232.80 and 2,976.10 is: 4,464.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,820.86 : 13,232.80 = 2,976.10 : x
  2. Step 2: Convert to fraction form
    8,820.86/13,232.80 = 2,976.10/x
  3. Step 3: Cross multiply
    8,820.86x = 13,232.80 × 2,976.10
  4. Step 4: Simplify right side
    8,820.86x = 39,382,106.72
  5. Step 5: Solve for x
    x = 39,382,106.72/8,820.86
  6. Step 6: Final answer
    x = 4,464.66

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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.