Home / 2,121.10-3,182.55-1,024.90

Finding the Fourth Proportional to 2,121.10, 3,182.55 and 1,024.90

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Solution

The fourth proportional to 2,121.10, 3,182.55 and 1,024.90 is: 1,537.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.10 : 3,182.55 = 1,024.90 : x
  2. Step 2: Convert to fraction form
    2,121.10/3,182.55 = 1,024.90/x
  3. Step 3: Cross multiply
    2,121.10x = 3,182.55 × 1,024.90
  4. Step 4: Simplify right side
    2,121.10x = 3,261,795.50
  5. Step 5: Solve for x
    x = 3,261,795.50/2,121.10
  6. Step 6: Final answer
    x = 1,537.78

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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.