Home / 2,821.08-4,226.97-971.19

Finding the Fourth Proportional to 2,821.08, 4,226.97 and 971.19

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Solution

The fourth proportional to 2,821.08, 4,226.97 and 971.19 is: 1,455.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.08 : 4,226.97 = 971.19 : x
  2. Step 2: Convert to fraction form
    2,821.08/4,226.97 = 971.19/x
  3. Step 3: Cross multiply
    2,821.08x = 4,226.97 × 971.19
  4. Step 4: Simplify right side
    2,821.08x = 4,105,190.99
  5. Step 5: Solve for x
    x = 4,105,190.99/2,821.08
  6. Step 6: Final answer
    x = 1,455.18

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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.