Home / 2,156.70-3,236.28-1,563.78

Finding the Fourth Proportional to 2,156.70, 3,236.28 and 1,563.78

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Solution

The fourth proportional to 2,156.70, 3,236.28 and 1,563.78 is: 2,346.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.70 : 3,236.28 = 1,563.78 : x
  2. Step 2: Convert to fraction form
    2,156.70/3,236.28 = 1,563.78/x
  3. Step 3: Cross multiply
    2,156.70x = 3,236.28 × 1,563.78
  4. Step 4: Simplify right side
    2,156.70x = 5,060,829.94
  5. Step 5: Solve for x
    x = 5,060,829.94/2,156.70
  6. Step 6: Final answer
    x = 2,346.56

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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.