Home / 2,649.31-3,973.35-1,188.88

Finding the Fourth Proportional to 2,649.31, 3,973.35 and 1,188.88

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Solution

The fourth proportional to 2,649.31, 3,973.35 and 1,188.88 is: 1,783.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,649.31 : 3,973.35 = 1,188.88 : x
  2. Step 2: Convert to fraction form
    2,649.31/3,973.35 = 1,188.88/x
  3. Step 3: Cross multiply
    2,649.31x = 3,973.35 × 1,188.88
  4. Step 4: Simplify right side
    2,649.31x = 4,723,816.48
  5. Step 5: Solve for x
    x = 4,723,816.48/2,649.31
  6. Step 6: Final answer
    x = 1,783.04

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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.