Home / 1,563.94-2,353.42-1,288.28

Finding the Fourth Proportional to 1,563.94, 2,353.42 and 1,288.28

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Solution

The fourth proportional to 1,563.94, 2,353.42 and 1,288.28 is: 1,938.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.94 : 2,353.42 = 1,288.28 : x
  2. Step 2: Convert to fraction form
    1,563.94/2,353.42 = 1,288.28/x
  3. Step 3: Cross multiply
    1,563.94x = 2,353.42 × 1,288.28
  4. Step 4: Simplify right side
    1,563.94x = 3,031,871.41
  5. Step 5: Solve for x
    x = 3,031,871.41/1,563.94
  6. Step 6: Final answer
    x = 1,938.61

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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.