Home / 3,805.18-5,708.31-1,339.72

Finding the Fourth Proportional to 3,805.18, 5,708.31 and 1,339.72

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Solution

The fourth proportional to 3,805.18, 5,708.31 and 1,339.72 is: 2,009.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,805.18 : 5,708.31 = 1,339.72 : x
  2. Step 2: Convert to fraction form
    3,805.18/5,708.31 = 1,339.72/x
  3. Step 3: Cross multiply
    3,805.18x = 5,708.31 × 1,339.72
  4. Step 4: Simplify right side
    3,805.18x = 7,647,537.07
  5. Step 5: Solve for x
    x = 7,647,537.07/3,805.18
  6. Step 6: Final answer
    x = 2,009.77

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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.