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Finding the Fourth Proportional to 34,939.72, 52,408.23 and 8,643.88

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Solution

The fourth proportional to 34,939.72, 52,408.23 and 8,643.88 is: 12,965.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,939.72 : 52,408.23 = 8,643.88 : x
  2. Step 2: Convert to fraction form
    34,939.72/52,408.23 = 8,643.88/x
  3. Step 3: Cross multiply
    34,939.72x = 52,408.23 × 8,643.88
  4. Step 4: Simplify right side
    34,939.72x = 453,010,451.13
  5. Step 5: Solve for x
    x = 453,010,451.13/34,939.72
  6. Step 6: Final answer
    x = 12,965.49

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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.