Home / 2,921.13-4,380.75-1,277.24

Finding the Fourth Proportional to 2,921.13, 4,380.75 and 1,277.24

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Solution

The fourth proportional to 2,921.13, 4,380.75 and 1,277.24 is: 1,915.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.13 : 4,380.75 = 1,277.24 : x
  2. Step 2: Convert to fraction form
    2,921.13/4,380.75 = 1,277.24/x
  3. Step 3: Cross multiply
    2,921.13x = 4,380.75 × 1,277.24
  4. Step 4: Simplify right side
    2,921.13x = 5,595,247.23
  5. Step 5: Solve for x
    x = 5,595,247.23/2,921.13
  6. Step 6: Final answer
    x = 1,915.44

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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.