Home / 6,812.19-9,400.82-3,981.51

Finding the Fourth Proportional to 6,812.19, 9,400.82 and 3,981.51

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Solution

The fourth proportional to 6,812.19, 9,400.82 and 3,981.51 is: 5,494.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,812.19 : 9,400.82 = 3,981.51 : x
  2. Step 2: Convert to fraction form
    6,812.19/9,400.82 = 3,981.51/x
  3. Step 3: Cross multiply
    6,812.19x = 9,400.82 × 3,981.51
  4. Step 4: Simplify right side
    6,812.19x = 37,429,438.93
  5. Step 5: Solve for x
    x = 37,429,438.93/6,812.19
  6. Step 6: Final answer
    x = 5,494.48

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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.