Home / 3,851.85-5,774.31-1,386.09

Finding the Fourth Proportional to 3,851.85, 5,774.31 and 1,386.09

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Solution

The fourth proportional to 3,851.85, 5,774.31 and 1,386.09 is: 2,077.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.85 : 5,774.31 = 1,386.09 : x
  2. Step 2: Convert to fraction form
    3,851.85/5,774.31 = 1,386.09/x
  3. Step 3: Cross multiply
    3,851.85x = 5,774.31 × 1,386.09
  4. Step 4: Simplify right side
    3,851.85x = 8,003,713.35
  5. Step 5: Solve for x
    x = 8,003,713.35/3,851.85
  6. Step 6: Final answer
    x = 2,077.89

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1.5x scale

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.