Home / 2,151.65-3,205.85-2,010.21

Finding the Fourth Proportional to 2,151.65, 3,205.85 and 2,010.21

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Solution

The fourth proportional to 2,151.65, 3,205.85 and 2,010.21 is: 2,995.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.65 : 3,205.85 = 2,010.21 : x
  2. Step 2: Convert to fraction form
    2,151.65/3,205.85 = 2,010.21/x
  3. Step 3: Cross multiply
    2,151.65x = 3,205.85 × 2,010.21
  4. Step 4: Simplify right side
    2,151.65x = 6,444,431.73
  5. Step 5: Solve for x
    x = 6,444,431.73/2,151.65
  6. Step 6: Final answer
    x = 2,995.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.