Home / 8,685.31-13,029.78-3,491.19

Finding the Fourth Proportional to 8,685.31, 13,029.78 and 3,491.19

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Solution

The fourth proportional to 8,685.31, 13,029.78 and 3,491.19 is: 5,237.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.31 : 13,029.78 = 3,491.19 : x
  2. Step 2: Convert to fraction form
    8,685.31/13,029.78 = 3,491.19/x
  3. Step 3: Cross multiply
    8,685.31x = 13,029.78 × 3,491.19
  4. Step 4: Simplify right side
    8,685.31x = 45,489,437.64
  5. Step 5: Solve for x
    x = 45,489,437.64/8,685.31
  6. Step 6: Final answer
    x = 5,237.51

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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.