Home / 1,647.24-2,273.11-939.11

Finding the Fourth Proportional to 1,647.24, 2,273.11 and 939.11

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Solution

The fourth proportional to 1,647.24, 2,273.11 and 939.11 is: 1,295.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.24 : 2,273.11 = 939.11 : x
  2. Step 2: Convert to fraction form
    1,647.24/2,273.11 = 939.11/x
  3. Step 3: Cross multiply
    1,647.24x = 2,273.11 × 939.11
  4. Step 4: Simplify right side
    1,647.24x = 2,134,692.98
  5. Step 5: Solve for x
    x = 2,134,692.98/1,647.24
  6. Step 6: Final answer
    x = 1,295.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.