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Finding the Fourth Proportional to 8,878.12, 13,320.32 and 3,947.32

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Solution

The fourth proportional to 8,878.12, 13,320.32 and 3,947.32 is: 5,922.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.12 : 13,320.32 = 3,947.32 : x
  2. Step 2: Convert to fraction form
    8,878.12/13,320.32 = 3,947.32/x
  3. Step 3: Cross multiply
    8,878.12x = 13,320.32 × 3,947.32
  4. Step 4: Simplify right side
    8,878.12x = 52,579,565.54
  5. Step 5: Solve for x
    x = 52,579,565.54/8,878.12
  6. Step 6: Final answer
    x = 5,922.38

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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.