Home / 8,426.78-12,641.66-2,878.83

Finding the Fourth Proportional to 8,426.78, 12,641.66 and 2,878.83

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Solution

The fourth proportional to 8,426.78, 12,641.66 and 2,878.83 is: 4,318.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,426.78 : 12,641.66 = 2,878.83 : x
  2. Step 2: Convert to fraction form
    8,426.78/12,641.66 = 2,878.83/x
  3. Step 3: Cross multiply
    8,426.78x = 12,641.66 × 2,878.83
  4. Step 4: Simplify right side
    8,426.78x = 36,393,190.06
  5. Step 5: Solve for x
    x = 36,393,190.06/8,426.78
  6. Step 6: Final answer
    x = 4,318.75

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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.