Home / 8,678.24-13,014.78-3,680.54

Finding the Fourth Proportional to 8,678.24, 13,014.78 and 3,680.54

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Solution

The fourth proportional to 8,678.24, 13,014.78 and 3,680.54 is: 5,519.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,678.24 : 13,014.78 = 3,680.54 : x
  2. Step 2: Convert to fraction form
    8,678.24/13,014.78 = 3,680.54/x
  3. Step 3: Cross multiply
    8,678.24x = 13,014.78 × 3,680.54
  4. Step 4: Simplify right side
    8,678.24x = 47,901,471.33
  5. Step 5: Solve for x
    x = 47,901,471.33/8,678.24
  6. Step 6: Final answer
    x = 5,519.72

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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.