Home / 2,921.56-4,380.88-1,881.36

Finding the Fourth Proportional to 2,921.56, 4,380.88 and 1,881.36

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Solution

The fourth proportional to 2,921.56, 4,380.88 and 1,881.36 is: 2,821.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.56 : 4,380.88 = 1,881.36 : x
  2. Step 2: Convert to fraction form
    2,921.56/4,380.88 = 1,881.36/x
  3. Step 3: Cross multiply
    2,921.56x = 4,380.88 × 1,881.36
  4. Step 4: Simplify right side
    2,921.56x = 8,242,012.40
  5. Step 5: Solve for x
    x = 8,242,012.40/2,921.56
  6. Step 6: Final answer
    x = 2,821.10

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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.