Home / 3,515.50-5,274.47-1,324.55

Finding the Fourth Proportional to 3,515.50, 5,274.47 and 1,324.55

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Solution

The fourth proportional to 3,515.50, 5,274.47 and 1,324.55 is: 1,987.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.50 : 5,274.47 = 1,324.55 : x
  2. Step 2: Convert to fraction form
    3,515.50/5,274.47 = 1,324.55/x
  3. Step 3: Cross multiply
    3,515.50x = 5,274.47 × 1,324.55
  4. Step 4: Simplify right side
    3,515.50x = 6,986,308.29
  5. Step 5: Solve for x
    x = 6,986,308.29/3,515.50
  6. Step 6: Final answer
    x = 1,987.29

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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.