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Finding the Fourth Proportional to 8,403.66, 12,604.41 and 2,856.78

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Solution

The fourth proportional to 8,403.66, 12,604.41 and 2,856.78 is: 4,284.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,403.66 : 12,604.41 = 2,856.78 : x
  2. Step 2: Convert to fraction form
    8,403.66/12,604.41 = 2,856.78/x
  3. Step 3: Cross multiply
    8,403.66x = 12,604.41 × 2,856.78
  4. Step 4: Simplify right side
    8,403.66x = 36,008,026.40
  5. Step 5: Solve for x
    x = 36,008,026.40/8,403.66
  6. Step 6: Final answer
    x = 4,284.80

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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.