Home / 2,159.22-3,239.28-698.31

Finding the Fourth Proportional to 2,159.22, 3,239.28 and 698.31

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Solution

The fourth proportional to 2,159.22, 3,239.28 and 698.31 is: 1,047.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159.22 : 3,239.28 = 698.31 : x
  2. Step 2: Convert to fraction form
    2,159.22/3,239.28 = 698.31/x
  3. Step 3: Cross multiply
    2,159.22x = 3,239.28 × 698.31
  4. Step 4: Simplify right side
    2,159.22x = 2,262,021.62
  5. Step 5: Solve for x
    x = 2,262,021.62/2,159.22
  6. Step 6: Final answer
    x = 1,047.61

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1.5x scale

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.