Home / 2,188.19-3,282.29-649.31

Finding the Fourth Proportional to 2,188.19, 3,282.29 and 649.31

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Solution

The fourth proportional to 2,188.19, 3,282.29 and 649.31 is: 973.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.19 : 3,282.29 = 649.31 : x
  2. Step 2: Convert to fraction form
    2,188.19/3,282.29 = 649.31/x
  3. Step 3: Cross multiply
    2,188.19x = 3,282.29 × 649.31
  4. Step 4: Simplify right side
    2,188.19x = 2,131,220.47
  5. Step 5: Solve for x
    x = 2,131,220.47/2,188.19
  6. Step 6: Final answer
    x = 973.97

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Similar ratio
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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.