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Finding the Fourth Proportional to 6,649.81, 9,974.66 and 2,545.81

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Solution

The fourth proportional to 6,649.81, 9,974.66 and 2,545.81 is: 3,818.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,649.81 : 9,974.66 = 2,545.81 : x
  2. Step 2: Convert to fraction form
    6,649.81/9,974.66 = 2,545.81/x
  3. Step 3: Cross multiply
    6,649.81x = 9,974.66 × 2,545.81
  4. Step 4: Simplify right side
    6,649.81x = 25,393,576.45
  5. Step 5: Solve for x
    x = 25,393,576.45/6,649.81
  6. Step 6: Final answer
    x = 3,818.69

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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.