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Finding the Fourth Proportional to 5,009.99, 6,912.55 and 3,239.47

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Solution

The fourth proportional to 5,009.99, 6,912.55 and 3,239.47 is: 4,469.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,009.99 : 6,912.55 = 3,239.47 : x
  2. Step 2: Convert to fraction form
    5,009.99/6,912.55 = 3,239.47/x
  3. Step 3: Cross multiply
    5,009.99x = 6,912.55 × 3,239.47
  4. Step 4: Simplify right side
    5,009.99x = 22,392,985.66
  5. Step 5: Solve for x
    x = 22,392,985.66/5,009.99
  6. Step 6: Final answer
    x = 4,469.66

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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.