Home / 9,986.12-14,979.30-3,411.80

Finding the Fourth Proportional to 9,986.12, 14,979.30 and 3,411.80

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Solution

The fourth proportional to 9,986.12, 14,979.30 and 3,411.80 is: 5,117.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,986.12 : 14,979.30 = 3,411.80 : x
  2. Step 2: Convert to fraction form
    9,986.12/14,979.30 = 3,411.80/x
  3. Step 3: Cross multiply
    9,986.12x = 14,979.30 × 3,411.80
  4. Step 4: Simplify right side
    9,986.12x = 51,106,375.74
  5. Step 5: Solve for x
    x = 51,106,375.74/9,986.12
  6. Step 6: Final answer
    x = 5,117.74

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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.