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Finding the Fourth Proportional to 6,650.90, 9,958.80 and 5,328.44

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Solution

The fourth proportional to 6,650.90, 9,958.80 and 5,328.44 is: 7,978.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,650.90 : 9,958.80 = 5,328.44 : x
  2. Step 2: Convert to fraction form
    6,650.90/9,958.80 = 5,328.44/x
  3. Step 3: Cross multiply
    6,650.90x = 9,958.80 × 5,328.44
  4. Step 4: Simplify right side
    6,650.90x = 53,064,868.27
  5. Step 5: Solve for x
    x = 53,064,868.27/6,650.90
  6. Step 6: Final answer
    x = 7,978.60

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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.