Home / 3,810.78-5,258.79-2,132.06

Finding the Fourth Proportional to 3,810.78, 5,258.79 and 2,132.06

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Solution

The fourth proportional to 3,810.78, 5,258.79 and 2,132.06 is: 2,942.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,810.78 : 5,258.79 = 2,132.06 : x
  2. Step 2: Convert to fraction form
    3,810.78/5,258.79 = 2,132.06/x
  3. Step 3: Cross multiply
    3,810.78x = 5,258.79 × 2,132.06
  4. Step 4: Simplify right side
    3,810.78x = 11,212,029.51
  5. Step 5: Solve for x
    x = 11,212,029.51/3,810.78
  6. Step 6: Final answer
    x = 2,942.19

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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.