Home / 3,744.94-5,615.78-1,989.56

Finding the Fourth Proportional to 3,744.94, 5,615.78 and 1,989.56

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Solution

The fourth proportional to 3,744.94, 5,615.78 and 1,989.56 is: 2,983.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,744.94 : 5,615.78 = 1,989.56 : x
  2. Step 2: Convert to fraction form
    3,744.94/5,615.78 = 1,989.56/x
  3. Step 3: Cross multiply
    3,744.94x = 5,615.78 × 1,989.56
  4. Step 4: Simplify right side
    3,744.94x = 11,172,931.26
  5. Step 5: Solve for x
    x = 11,172,931.26/3,744.94
  6. Step 6: Final answer
    x = 2,983.47

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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.