Home / 6,418.78-8,857.65-3,586.11

Finding the Fourth Proportional to 6,418.78, 8,857.65 and 3,586.11

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Solution

The fourth proportional to 6,418.78, 8,857.65 and 3,586.11 is: 4,948.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,418.78 : 8,857.65 = 3,586.11 : x
  2. Step 2: Convert to fraction form
    6,418.78/8,857.65 = 3,586.11/x
  3. Step 3: Cross multiply
    6,418.78x = 8,857.65 × 3,586.11
  4. Step 4: Simplify right side
    6,418.78x = 31,764,487.47
  5. Step 5: Solve for x
    x = 31,764,487.47/6,418.78
  6. Step 6: Final answer
    x = 4,948.68

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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.