Home / 3,851.68-5,776.90-1,078.51

Finding the Fourth Proportional to 3,851.68, 5,776.90 and 1,078.51

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Solution

The fourth proportional to 3,851.68, 5,776.90 and 1,078.51 is: 1,617.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.68 : 5,776.90 = 1,078.51 : x
  2. Step 2: Convert to fraction form
    3,851.68/5,776.90 = 1,078.51/x
  3. Step 3: Cross multiply
    3,851.68x = 5,776.90 × 1,078.51
  4. Step 4: Simplify right side
    3,851.68x = 6,230,444.42
  5. Step 5: Solve for x
    x = 6,230,444.42/3,851.68
  6. Step 6: Final answer
    x = 1,617.59

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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.