Home / 2,921.28-4,032.78-1,803.86

Finding the Fourth Proportional to 2,921.28, 4,032.78 and 1,803.86

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Solution

The fourth proportional to 2,921.28, 4,032.78 and 1,803.86 is: 2,490.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.28 : 4,032.78 = 1,803.86 : x
  2. Step 2: Convert to fraction form
    2,921.28/4,032.78 = 1,803.86/x
  3. Step 3: Cross multiply
    2,921.28x = 4,032.78 × 1,803.86
  4. Step 4: Simplify right side
    2,921.28x = 7,274,550.37
  5. Step 5: Solve for x
    x = 7,274,550.37/2,921.28
  6. Step 6: Final answer
    x = 2,490.19

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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.