Home / 8,435.87-12,661.52-4,278.75

Finding the Fourth Proportional to 8,435.87, 12,661.52 and 4,278.75

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Solution

The fourth proportional to 8,435.87, 12,661.52 and 4,278.75 is: 6,422.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,435.87 : 12,661.52 = 4,278.75 : x
  2. Step 2: Convert to fraction form
    8,435.87/12,661.52 = 4,278.75/x
  3. Step 3: Cross multiply
    8,435.87x = 12,661.52 × 4,278.75
  4. Step 4: Simplify right side
    8,435.87x = 54,175,478.70
  5. Step 5: Solve for x
    x = 54,175,478.70/8,435.87
  6. Step 6: Final answer
    x = 6,422.04

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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.