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Finding the Fourth Proportional to 6,649.70, 9,980.72 and 3,365.11

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Solution

The fourth proportional to 6,649.70, 9,980.72 and 3,365.11 is: 5,050.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,649.70 : 9,980.72 = 3,365.11 : x
  2. Step 2: Convert to fraction form
    6,649.70/9,980.72 = 3,365.11/x
  3. Step 3: Cross multiply
    6,649.70x = 9,980.72 × 3,365.11
  4. Step 4: Simplify right side
    6,649.70x = 33,586,228.95
  5. Step 5: Solve for x
    x = 33,586,228.95/6,649.70
  6. Step 6: Final answer
    x = 5,050.79

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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.