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Finding the Fourth Proportional to 8,370.95, 12,538.80 and 3,983.99

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Solution

The fourth proportional to 8,370.95, 12,538.80 and 3,983.99 is: 5,967.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,370.95 : 12,538.80 = 3,983.99 : x
  2. Step 2: Convert to fraction form
    8,370.95/12,538.80 = 3,983.99/x
  3. Step 3: Cross multiply
    8,370.95x = 12,538.80 × 3,983.99
  4. Step 4: Simplify right side
    8,370.95x = 49,954,391.12
  5. Step 5: Solve for x
    x = 49,954,391.12/8,370.95
  6. Step 6: Final answer
    x = 5,967.59

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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.