Home / 2,921.84-4,376.34-2,101.70

Finding the Fourth Proportional to 2,921.84, 4,376.34 and 2,101.70

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Solution

The fourth proportional to 2,921.84, 4,376.34 and 2,101.70 is: 3,147.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.84 : 4,376.34 = 2,101.70 : x
  2. Step 2: Convert to fraction form
    2,921.84/4,376.34 = 2,101.70/x
  3. Step 3: Cross multiply
    2,921.84x = 4,376.34 × 2,101.70
  4. Step 4: Simplify right side
    2,921.84x = 9,197,753.78
  5. Step 5: Solve for x
    x = 9,197,753.78/2,921.84
  6. Step 6: Final answer
    x = 3,147.93

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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.