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Finding the Fourth Proportional to 8,341.61, 12,505.05 and 3,143.84

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Solution

The fourth proportional to 8,341.61, 12,505.05 and 3,143.84 is: 4,712.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,341.61 : 12,505.05 = 3,143.84 : x
  2. Step 2: Convert to fraction form
    8,341.61/12,505.05 = 3,143.84/x
  3. Step 3: Cross multiply
    8,341.61x = 12,505.05 × 3,143.84
  4. Step 4: Simplify right side
    8,341.61x = 39,313,813.87
  5. Step 5: Solve for x
    x = 39,313,813.87/8,341.61
  6. Step 6: Final answer
    x = 4,712.98

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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.