Home / 7,939.68-11,907.08-5,490.24

Finding the Fourth Proportional to 7,939.68, 11,907.08 and 5,490.24

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Solution

The fourth proportional to 7,939.68, 11,907.08 and 5,490.24 is: 8,233.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.68 : 11,907.08 = 5,490.24 : x
  2. Step 2: Convert to fraction form
    7,939.68/11,907.08 = 5,490.24/x
  3. Step 3: Cross multiply
    7,939.68x = 11,907.08 × 5,490.24
  4. Step 4: Simplify right side
    7,939.68x = 65,372,739.76
  5. Step 5: Solve for x
    x = 65,372,739.76/7,939.68
  6. Step 6: Final answer
    x = 8,233.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.