Home / 5,811.07-8,717.65-2,118.48

Finding the Fourth Proportional to 5,811.07, 8,717.65 and 2,118.48

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Solution

The fourth proportional to 5,811.07, 8,717.65 and 2,118.48 is: 3,178.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.07 : 8,717.65 = 2,118.48 : x
  2. Step 2: Convert to fraction form
    5,811.07/8,717.65 = 2,118.48/x
  3. Step 3: Cross multiply
    5,811.07x = 8,717.65 × 2,118.48
  4. Step 4: Simplify right side
    5,811.07x = 18,468,167.17
  5. Step 5: Solve for x
    x = 18,468,167.17/5,811.07
  6. Step 6: Final answer
    x = 3,178.10

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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.