Home / 3,487.10-5,229.42-1,021.28

Finding the Fourth Proportional to 3,487.10, 5,229.42 and 1,021.28

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Solution

The fourth proportional to 3,487.10, 5,229.42 and 1,021.28 is: 1,531.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,487.10 : 5,229.42 = 1,021.28 : x
  2. Step 2: Convert to fraction form
    3,487.10/5,229.42 = 1,021.28/x
  3. Step 3: Cross multiply
    3,487.10x = 5,229.42 × 1,021.28
  4. Step 4: Simplify right side
    3,487.10x = 5,340,702.06
  5. Step 5: Solve for x
    x = 5,340,702.06/3,487.10
  6. Step 6: Final answer
    x = 1,531.56

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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.