Home / 2,159.02-3,237.72-697.78

Finding the Fourth Proportional to 2,159.02, 3,237.72 and 697.78

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Solution

The fourth proportional to 2,159.02, 3,237.72 and 697.78 is: 1,046.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159.02 : 3,237.72 = 697.78 : x
  2. Step 2: Convert to fraction form
    2,159.02/3,237.72 = 697.78/x
  3. Step 3: Cross multiply
    2,159.02x = 3,237.72 × 697.78
  4. Step 4: Simplify right side
    2,159.02x = 2,259,221.62
  5. Step 5: Solve for x
    x = 2,259,221.62/2,159.02
  6. Step 6: Final answer
    x = 1,046.41

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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.