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Finding the Fourth Proportional to 2,129.49, 3,190.98 and 896.24

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Solution

The fourth proportional to 2,129.49, 3,190.98 and 896.24 is: 1,342.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.49 : 3,190.98 = 896.24 : x
  2. Step 2: Convert to fraction form
    2,129.49/3,190.98 = 896.24/x
  3. Step 3: Cross multiply
    2,129.49x = 3,190.98 × 896.24
  4. Step 4: Simplify right side
    2,129.49x = 2,859,867.96
  5. Step 5: Solve for x
    x = 2,859,867.96/2,129.49
  6. Step 6: Final answer
    x = 1,342.98

Related Problems

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Double scale
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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.