Home / 1,921.24-2,876.28-1,436.32

Finding the Fourth Proportional to 1,921.24, 2,876.28 and 1,436.32

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Solution

The fourth proportional to 1,921.24, 2,876.28 and 1,436.32 is: 2,150.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.24 : 2,876.28 = 1,436.32 : x
  2. Step 2: Convert to fraction form
    1,921.24/2,876.28 = 1,436.32/x
  3. Step 3: Cross multiply
    1,921.24x = 2,876.28 × 1,436.32
  4. Step 4: Simplify right side
    1,921.24x = 4,131,258.49
  5. Step 5: Solve for x
    x = 4,131,258.49/1,921.24
  6. Step 6: Final answer
    x = 2,150.31

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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.