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Finding the Fourth Proportional to 7,050.50, 9,729.53 and 3,906.66

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Solution

The fourth proportional to 7,050.50, 9,729.53 and 3,906.66 is: 5,391.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,050.50 : 9,729.53 = 3,906.66 : x
  2. Step 2: Convert to fraction form
    7,050.50/9,729.53 = 3,906.66/x
  3. Step 3: Cross multiply
    7,050.50x = 9,729.53 × 3,906.66
  4. Step 4: Simplify right side
    7,050.50x = 38,009,965.67
  5. Step 5: Solve for x
    x = 38,009,965.67/7,050.50
  6. Step 6: Final answer
    x = 5,391.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.