Home / 2,131.60-3,194.96-898.80

Finding the Fourth Proportional to 2,131.60, 3,194.96 and 898.80

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Solution

The fourth proportional to 2,131.60, 3,194.96 and 898.80 is: 1,347.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.60 : 3,194.96 = 898.80 : x
  2. Step 2: Convert to fraction form
    2,131.60/3,194.96 = 898.80/x
  3. Step 3: Cross multiply
    2,131.60x = 3,194.96 × 898.80
  4. Step 4: Simplify right side
    2,131.60x = 2,871,630.05
  5. Step 5: Solve for x
    x = 2,871,630.05/2,131.60
  6. Step 6: Final answer
    x = 1,347.17

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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.