Home / 5,118.21-7,678.67-2,342.61

Finding the Fourth Proportional to 5,118.21, 7,678.67 and 2,342.61

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Solution

The fourth proportional to 5,118.21, 7,678.67 and 2,342.61 is: 3,514.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.21 : 7,678.67 = 2,342.61 : x
  2. Step 2: Convert to fraction form
    5,118.21/7,678.67 = 2,342.61/x
  3. Step 3: Cross multiply
    5,118.21x = 7,678.67 × 2,342.61
  4. Step 4: Simplify right side
    5,118.21x = 17,988,117.42
  5. Step 5: Solve for x
    x = 17,988,117.42/5,118.21
  6. Step 6: Final answer
    x = 3,514.53

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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.