Home / 5,209.35-7,815.39-2,088.79

Finding the Fourth Proportional to 5,209.35, 7,815.39 and 2,088.79

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Solution

The fourth proportional to 5,209.35, 7,815.39 and 2,088.79 is: 3,133.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,209.35 : 7,815.39 = 2,088.79 : x
  2. Step 2: Convert to fraction form
    5,209.35/7,815.39 = 2,088.79/x
  3. Step 3: Cross multiply
    5,209.35x = 7,815.39 × 2,088.79
  4. Step 4: Simplify right side
    5,209.35x = 16,324,681.11
  5. Step 5: Solve for x
    x = 16,324,681.11/5,209.35
  6. Step 6: Final answer
    x = 3,133.73

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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.