Home / 7,991.62-11,023.28-5,302.78

Finding the Fourth Proportional to 7,991.62, 11,023.28 and 5,302.78

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Solution

The fourth proportional to 7,991.62, 11,023.28 and 5,302.78 is: 7,314.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.62 : 11,023.28 = 5,302.78 : x
  2. Step 2: Convert to fraction form
    7,991.62/11,023.28 = 5,302.78/x
  3. Step 3: Cross multiply
    7,991.62x = 11,023.28 × 5,302.78
  4. Step 4: Simplify right side
    7,991.62x = 58,453,986.86
  5. Step 5: Solve for x
    x = 58,453,986.86/7,991.62
  6. Step 6: Final answer
    x = 7,314.41

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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.