Home / 2,857.23-4,278.85-2,580.21

Finding the Fourth Proportional to 2,857.23, 4,278.85 and 2,580.21

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Solution

The fourth proportional to 2,857.23, 4,278.85 and 2,580.21 is: 3,864.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,857.23 : 4,278.85 = 2,580.21 : x
  2. Step 2: Convert to fraction form
    2,857.23/4,278.85 = 2,580.21/x
  3. Step 3: Cross multiply
    2,857.23x = 4,278.85 × 2,580.21
  4. Step 4: Simplify right side
    2,857.23x = 11,040,325.11
  5. Step 5: Solve for x
    x = 11,040,325.11/2,857.23
  6. Step 6: Final answer
    x = 3,864.00

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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.