Home / 2,989.43-4,125.63-1,663.16

Finding the Fourth Proportional to 2,989.43, 4,125.63 and 1,663.16

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Solution

The fourth proportional to 2,989.43, 4,125.63 and 1,663.16 is: 2,295.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.43 : 4,125.63 = 1,663.16 : x
  2. Step 2: Convert to fraction form
    2,989.43/4,125.63 = 1,663.16/x
  3. Step 3: Cross multiply
    2,989.43x = 4,125.63 × 1,663.16
  4. Step 4: Simplify right side
    2,989.43x = 6,861,562.16
  5. Step 5: Solve for x
    x = 6,861,562.16/2,989.43
  6. Step 6: Final answer
    x = 2,295.28

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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.