Home / 8,678.75-13,016.09-2,439.36

Finding the Fourth Proportional to 8,678.75, 13,016.09 and 2,439.36

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Solution

The fourth proportional to 8,678.75, 13,016.09 and 2,439.36 is: 3,658.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.75 : 13,016.09 = 2,439.36 : x
  2. Step 2: Convert to fraction form
    8,678.75/13,016.09 = 2,439.36/x
  3. Step 3: Cross multiply
    8,678.75x = 13,016.09 × 2,439.36
  4. Step 4: Simplify right side
    8,678.75x = 31,750,929.30
  5. Step 5: Solve for x
    x = 31,750,929.30/8,678.75
  6. Step 6: Final answer
    x = 3,658.47

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1.5x scale

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.