Home / 4,086.87-5,638.68-2,385.06

Finding the Fourth Proportional to 4,086.87, 5,638.68 and 2,385.06

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Solution

The fourth proportional to 4,086.87, 5,638.68 and 2,385.06 is: 3,290.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,086.87 : 5,638.68 = 2,385.06 : x
  2. Step 2: Convert to fraction form
    4,086.87/5,638.68 = 2,385.06/x
  3. Step 3: Cross multiply
    4,086.87x = 5,638.68 × 2,385.06
  4. Step 4: Simplify right side
    4,086.87x = 13,448,590.12
  5. Step 5: Solve for x
    x = 13,448,590.12/4,086.87
  6. Step 6: Final answer
    x = 3,290.68

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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.