Home / 5,421.29-8,118.93-2,781.84

Finding the Fourth Proportional to 5,421.29, 8,118.93 and 2,781.84

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Solution

The fourth proportional to 5,421.29, 8,118.93 and 2,781.84 is: 4,166.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.29 : 8,118.93 = 2,781.84 : x
  2. Step 2: Convert to fraction form
    5,421.29/8,118.93 = 2,781.84/x
  3. Step 3: Cross multiply
    5,421.29x = 8,118.93 × 2,781.84
  4. Step 4: Simplify right side
    5,421.29x = 22,585,564.23
  5. Step 5: Solve for x
    x = 22,585,564.23/5,421.29
  6. Step 6: Final answer
    x = 4,166.09

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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.