Home / 2,989.36-4,125.21-1,663.12

Finding the Fourth Proportional to 2,989.36, 4,125.21 and 1,663.12

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Solution

The fourth proportional to 2,989.36, 4,125.21 and 1,663.12 is: 2,295.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.36 : 4,125.21 = 1,663.12 : x
  2. Step 2: Convert to fraction form
    2,989.36/4,125.21 = 1,663.12/x
  3. Step 3: Cross multiply
    2,989.36x = 4,125.21 × 1,663.12
  4. Step 4: Simplify right side
    2,989.36x = 6,860,698.63
  5. Step 5: Solve for x
    x = 6,860,698.63/2,989.36
  6. Step 6: Final answer
    x = 2,295.04

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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.