Home / 1,921.24-2,649.06-1,640.56

Finding the Fourth Proportional to 1,921.24, 2,649.06 and 1,640.56

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Solution

The fourth proportional to 1,921.24, 2,649.06 and 1,640.56 is: 2,262.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.24 : 2,649.06 = 1,640.56 : x
  2. Step 2: Convert to fraction form
    1,921.24/2,649.06 = 1,640.56/x
  3. Step 3: Cross multiply
    1,921.24x = 2,649.06 × 1,640.56
  4. Step 4: Simplify right side
    1,921.24x = 4,345,941.87
  5. Step 5: Solve for x
    x = 4,345,941.87/1,921.24
  6. Step 6: Final answer
    x = 2,262.05

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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.