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Finding the Fourth Proportional to 8,403.55, 12,604.10 and 2,480.15

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Solution

The fourth proportional to 8,403.55, 12,604.10 and 2,480.15 is: 3,719.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,403.55 : 12,604.10 = 2,480.15 : x
  2. Step 2: Convert to fraction form
    8,403.55/12,604.10 = 2,480.15/x
  3. Step 3: Cross multiply
    8,403.55x = 12,604.10 × 2,480.15
  4. Step 4: Simplify right side
    8,403.55x = 31,259,995.59
  5. Step 5: Solve for x
    x = 31,259,995.59/8,403.55
  6. Step 6: Final answer
    x = 3,719.86

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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.