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Finding the Fourth Proportional to 8,454.78, 12,683.25 and 2,908.98

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Solution

The fourth proportional to 8,454.78, 12,683.25 and 2,908.98 is: 4,363.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,454.78 : 12,683.25 = 2,908.98 : x
  2. Step 2: Convert to fraction form
    8,454.78/12,683.25 = 2,908.98/x
  3. Step 3: Cross multiply
    8,454.78x = 12,683.25 × 2,908.98
  4. Step 4: Simplify right side
    8,454.78x = 36,895,320.59
  5. Step 5: Solve for x
    x = 36,895,320.59/8,454.78
  6. Step 6: Final answer
    x = 4,363.84

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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.