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Finding the Fourth Proportional to 7,239.06, 9,985.41 and 5,251.86

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Solution

The fourth proportional to 7,239.06, 9,985.41 and 5,251.86 is: 7,244.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,239.06 : 9,985.41 = 5,251.86 : x
  2. Step 2: Convert to fraction form
    7,239.06/9,985.41 = 5,251.86/x
  3. Step 3: Cross multiply
    7,239.06x = 9,985.41 × 5,251.86
  4. Step 4: Simplify right side
    7,239.06x = 52,441,975.36
  5. Step 5: Solve for x
    x = 52,441,975.36/7,239.06
  6. Step 6: Final answer
    x = 7,244.31

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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.