Home / 5,089.79-7,638.57-2,279.49

Finding the Fourth Proportional to 5,089.79, 7,638.57 and 2,279.49

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Solution

The fourth proportional to 5,089.79, 7,638.57 and 2,279.49 is: 3,420.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,089.79 : 7,638.57 = 2,279.49 : x
  2. Step 2: Convert to fraction form
    5,089.79/7,638.57 = 2,279.49/x
  3. Step 3: Cross multiply
    5,089.79x = 7,638.57 × 2,279.49
  4. Step 4: Simplify right side
    5,089.79x = 17,412,043.93
  5. Step 5: Solve for x
    x = 17,412,043.93/5,089.79
  6. Step 6: Final answer
    x = 3,420.97

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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.