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Finding the Fourth Proportional to 8,820.68, 13,231.01 and 2,977.20

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Solution

The fourth proportional to 8,820.68, 13,231.01 and 2,977.20 is: 4,465.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,820.68 : 13,231.01 = 2,977.20 : x
  2. Step 2: Convert to fraction form
    8,820.68/13,231.01 = 2,977.20/x
  3. Step 3: Cross multiply
    8,820.68x = 13,231.01 × 2,977.20
  4. Step 4: Simplify right side
    8,820.68x = 39,391,370.42
  5. Step 5: Solve for x
    x = 39,391,370.42/8,820.68
  6. Step 6: Final answer
    x = 4,465.80

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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.