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Finding the Fourth Proportional to 7,579.91, 10,451.92 and 5,190.28

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Solution

The fourth proportional to 7,579.91, 10,451.92 and 5,190.28 is: 7,156.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,579.91 : 10,451.92 = 5,190.28 : x
  2. Step 2: Convert to fraction form
    7,579.91/10,451.92 = 5,190.28/x
  3. Step 3: Cross multiply
    7,579.91x = 10,451.92 × 5,190.28
  4. Step 4: Simplify right side
    7,579.91x = 54,248,391.34
  5. Step 5: Solve for x
    x = 54,248,391.34/7,579.91
  6. Step 6: Final answer
    x = 7,156.86

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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.