Home / 10,418.12-15,628.80-3,491

Finding the Fourth Proportional to 10,418.12, 15,628.80 and 3,491

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Solution

The fourth proportional to 10,418.12, 15,628.80 and 3,491 is: 5,237.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,418.12 : 15,628.80 = 3,491 : x
  2. Step 2: Convert to fraction form
    10,418.12/15,628.80 = 3,491/x
  3. Step 3: Cross multiply
    10,418.12x = 15,628.80 × 3,491
  4. Step 4: Simplify right side
    10,418.12x = 54,560,140.80
  5. Step 5: Solve for x
    x = 54,560,140.80/10,418.12
  6. Step 6: Final answer
    x = 5,237.04

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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.