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Finding the Fourth Proportional to 9,697.80, 14,558.40 and 5,540.70

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Solution

The fourth proportional to 9,697.80, 14,558.40 and 5,540.70 is: 8,317.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,697.80 : 14,558.40 = 5,540.70 : x
  2. Step 2: Convert to fraction form
    9,697.80/14,558.40 = 5,540.70/x
  3. Step 3: Cross multiply
    9,697.80x = 14,558.40 × 5,540.70
  4. Step 4: Simplify right side
    9,697.80x = 80,663,726.88
  5. Step 5: Solve for x
    x = 80,663,726.88/9,697.80
  6. Step 6: Final answer
    x = 8,317.73

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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.