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Finding the Fourth Proportional to 8,480.28, 12,720.56 and 2,933.77

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Solution

The fourth proportional to 8,480.28, 12,720.56 and 2,933.77 is: 4,400.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.28 : 12,720.56 = 2,933.77 : x
  2. Step 2: Convert to fraction form
    8,480.28/12,720.56 = 2,933.77/x
  3. Step 3: Cross multiply
    8,480.28x = 12,720.56 × 2,933.77
  4. Step 4: Simplify right side
    8,480.28x = 37,319,197.31
  5. Step 5: Solve for x
    x = 37,319,197.31/8,480.28
  6. Step 6: Final answer
    x = 4,400.70

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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.