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Finding the Fourth Proportional to 7,209.18, 9,945.99 and 4,847.58

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Solution

The fourth proportional to 7,209.18, 9,945.99 and 4,847.58 is: 6,687.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,209.18 : 9,945.99 = 4,847.58 : x
  2. Step 2: Convert to fraction form
    7,209.18/9,945.99 = 4,847.58/x
  3. Step 3: Cross multiply
    7,209.18x = 9,945.99 × 4,847.58
  4. Step 4: Simplify right side
    7,209.18x = 48,213,982.20
  5. Step 5: Solve for x
    x = 48,213,982.20/7,209.18
  6. Step 6: Final answer
    x = 6,687.86

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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.