Home / 4,085.78-5,638.66-2,317.50

Finding the Fourth Proportional to 4,085.78, 5,638.66 and 2,317.50

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Solution

The fourth proportional to 4,085.78, 5,638.66 and 2,317.50 is: 3,198.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,085.78 : 5,638.66 = 2,317.50 : x
  2. Step 2: Convert to fraction form
    4,085.78/5,638.66 = 2,317.50/x
  3. Step 3: Cross multiply
    4,085.78x = 5,638.66 × 2,317.50
  4. Step 4: Simplify right side
    4,085.78x = 13,067,594.55
  5. Step 5: Solve for x
    x = 13,067,594.55/4,085.78
  6. Step 6: Final answer
    x = 3,198.31

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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.