Home / 5,786.48-7,985.45-3,398.18

Finding the Fourth Proportional to 5,786.48, 7,985.45 and 3,398.18

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Solution

The fourth proportional to 5,786.48, 7,985.45 and 3,398.18 is: 4,689.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,786.48 : 7,985.45 = 3,398.18 : x
  2. Step 2: Convert to fraction form
    5,786.48/7,985.45 = 3,398.18/x
  3. Step 3: Cross multiply
    5,786.48x = 7,985.45 × 3,398.18
  4. Step 4: Simplify right side
    5,786.48x = 27,135,965.05
  5. Step 5: Solve for x
    x = 27,135,965.05/5,786.48
  6. Step 6: Final answer
    x = 4,689.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.