Home / 2,889.94-3,988.08-1,563.61

Finding the Fourth Proportional to 2,889.94, 3,988.08 and 1,563.61

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Solution

The fourth proportional to 2,889.94, 3,988.08 and 1,563.61 is: 2,157.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.94 : 3,988.08 = 1,563.61 : x
  2. Step 2: Convert to fraction form
    2,889.94/3,988.08 = 1,563.61/x
  3. Step 3: Cross multiply
    2,889.94x = 3,988.08 × 1,563.61
  4. Step 4: Simplify right side
    2,889.94x = 6,235,812.62
  5. Step 5: Solve for x
    x = 6,235,812.62/2,889.94
  6. Step 6: Final answer
    x = 2,157.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.