Home / 7,738.91-10,679.75-4,202.12

Finding the Fourth Proportional to 7,738.91, 10,679.75 and 4,202.12

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Solution

The fourth proportional to 7,738.91, 10,679.75 and 4,202.12 is: 5,798.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,738.91 : 10,679.75 = 4,202.12 : x
  2. Step 2: Convert to fraction form
    7,738.91/10,679.75 = 4,202.12/x
  3. Step 3: Cross multiply
    7,738.91x = 10,679.75 × 4,202.12
  4. Step 4: Simplify right side
    7,738.91x = 44,877,516.66
  5. Step 5: Solve for x
    x = 44,877,516.66/7,738.91
  6. Step 6: Final answer
    x = 5,798.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.