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Finding the Fourth Proportional to 2,653.82, 3,980.73 and 898.83

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Solution

The fourth proportional to 2,653.82, 3,980.73 and 898.83 is: 1,348.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,653.82 : 3,980.73 = 898.83 : x
  2. Step 2: Convert to fraction form
    2,653.82/3,980.73 = 898.83/x
  3. Step 3: Cross multiply
    2,653.82x = 3,980.73 × 898.83
  4. Step 4: Simplify right side
    2,653.82x = 3,577,999.55
  5. Step 5: Solve for x
    x = 3,577,999.55/2,653.82
  6. Step 6: Final answer
    x = 1,348.25

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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.