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Finding the Fourth Proportional to 7,924.78, 10,939.73 and 5,237.62

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Solution

The fourth proportional to 7,924.78, 10,939.73 and 5,237.62 is: 7,230.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,924.78 : 10,939.73 = 5,237.62 : x
  2. Step 2: Convert to fraction form
    7,924.78/10,939.73 = 5,237.62/x
  3. Step 3: Cross multiply
    7,924.78x = 10,939.73 × 5,237.62
  4. Step 4: Simplify right side
    7,924.78x = 57,298,170.07
  5. Step 5: Solve for x
    x = 57,298,170.07/7,924.78
  6. Step 6: Final answer
    x = 7,230.25

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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.