Home / 2,190.14-3,285.26-891.61

Finding the Fourth Proportional to 2,190.14, 3,285.26 and 891.61

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Solution

The fourth proportional to 2,190.14, 3,285.26 and 891.61 is: 1,337.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.14 : 3,285.26 = 891.61 : x
  2. Step 2: Convert to fraction form
    2,190.14/3,285.26 = 891.61/x
  3. Step 3: Cross multiply
    2,190.14x = 3,285.26 × 891.61
  4. Step 4: Simplify right side
    2,190.14x = 2,929,161.34
  5. Step 5: Solve for x
    x = 2,929,161.34/2,190.14
  6. Step 6: Final answer
    x = 1,337.43

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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.