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Finding the Fourth Proportional to 8,820.56, 13,230.84 and 4,189.52

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Solution

The fourth proportional to 8,820.56, 13,230.84 and 4,189.52 is: 6,284.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,820.56 : 13,230.84 = 4,189.52 : x
  2. Step 2: Convert to fraction form
    8,820.56/13,230.84 = 4,189.52/x
  3. Step 3: Cross multiply
    8,820.56x = 13,230.84 × 4,189.52
  4. Step 4: Simplify right side
    8,820.56x = 55,430,868.80
  5. Step 5: Solve for x
    x = 55,430,868.80/8,820.56
  6. Step 6: Final answer
    x = 6,284.28

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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.