Home / 2,821.08-4,212.06-2,646.12

Finding the Fourth Proportional to 2,821.08, 4,212.06 and 2,646.12

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Solution

The fourth proportional to 2,821.08, 4,212.06 and 2,646.12 is: 3,950.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.08 : 4,212.06 = 2,646.12 : x
  2. Step 2: Convert to fraction form
    2,821.08/4,212.06 = 2,646.12/x
  3. Step 3: Cross multiply
    2,821.08x = 4,212.06 × 2,646.12
  4. Step 4: Simplify right side
    2,821.08x = 11,145,616.21
  5. Step 5: Solve for x
    x = 11,145,616.21/2,821.08
  6. Step 6: Final answer
    x = 3,950.83

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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.