Home / 2,129.37-3,190.80-896.10

Finding the Fourth Proportional to 2,129.37, 3,190.80 and 896.10

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Solution

The fourth proportional to 2,129.37, 3,190.80 and 896.10 is: 1,342.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.37 : 3,190.80 = 896.10 : x
  2. Step 2: Convert to fraction form
    2,129.37/3,190.80 = 896.10/x
  3. Step 3: Cross multiply
    2,129.37x = 3,190.80 × 896.10
  4. Step 4: Simplify right side
    2,129.37x = 2,859,275.88
  5. Step 5: Solve for x
    x = 2,859,275.88/2,129.37
  6. Step 6: Final answer
    x = 1,342.78

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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.