Home / 3,512.89-5,266.23-1,321.71

Finding the Fourth Proportional to 3,512.89, 5,266.23 and 1,321.71

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Solution

The fourth proportional to 3,512.89, 5,266.23 and 1,321.71 is: 1,981.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,512.89 : 5,266.23 = 1,321.71 : x
  2. Step 2: Convert to fraction form
    3,512.89/5,266.23 = 1,321.71/x
  3. Step 3: Cross multiply
    3,512.89x = 5,266.23 × 1,321.71
  4. Step 4: Simplify right side
    3,512.89x = 6,960,428.85
  5. Step 5: Solve for x
    x = 6,960,428.85/3,512.89
  6. Step 6: Final answer
    x = 1,981.40

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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.