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Finding the Fourth Proportional to 7,209.77, 9,945.68 and 5,866.90

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Solution

The fourth proportional to 7,209.77, 9,945.68 and 5,866.90 is: 8,093.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,209.77 : 9,945.68 = 5,866.90 : x
  2. Step 2: Convert to fraction form
    7,209.77/9,945.68 = 5,866.90/x
  3. Step 3: Cross multiply
    7,209.77x = 9,945.68 × 5,866.90
  4. Step 4: Simplify right side
    7,209.77x = 58,350,255.79
  5. Step 5: Solve for x
    x = 58,350,255.79/7,209.77
  6. Step 6: Final answer
    x = 8,093.23

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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.