Home / 4,089.76-5,643.78-2,388.56

Finding the Fourth Proportional to 4,089.76, 5,643.78 and 2,388.56

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Solution

The fourth proportional to 4,089.76, 5,643.78 and 2,388.56 is: 3,296.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,089.76 : 5,643.78 = 2,388.56 : x
  2. Step 2: Convert to fraction form
    4,089.76/5,643.78 = 2,388.56/x
  3. Step 3: Cross multiply
    4,089.76x = 5,643.78 × 2,388.56
  4. Step 4: Simplify right side
    4,089.76x = 13,480,469.98
  5. Step 5: Solve for x
    x = 13,480,469.98/4,089.76
  6. Step 6: Final answer
    x = 3,296.15

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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.