Home / 3,851.62-5,777.40-1,386.43

Finding the Fourth Proportional to 3,851.62, 5,777.40 and 1,386.43

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Solution

The fourth proportional to 3,851.62, 5,777.40 and 1,386.43 is: 2,079.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.62 : 5,777.40 = 1,386.43 : x
  2. Step 2: Convert to fraction form
    3,851.62/5,777.40 = 1,386.43/x
  3. Step 3: Cross multiply
    3,851.62x = 5,777.40 × 1,386.43
  4. Step 4: Simplify right side
    3,851.62x = 8,009,935.26
  5. Step 5: Solve for x
    x = 8,009,935.26/3,851.62
  6. Step 6: Final answer
    x = 2,079.63

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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.