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Finding the Fourth Proportional to 3,460.98, 5,188.70 and 1,998.48

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Solution

The fourth proportional to 3,460.98, 5,188.70 and 1,998.48 is: 2,996.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,460.98 : 5,188.70 = 1,998.48 : x
  2. Step 2: Convert to fraction form
    3,460.98/5,188.70 = 1,998.48/x
  3. Step 3: Cross multiply
    3,460.98x = 5,188.70 × 1,998.48
  4. Step 4: Simplify right side
    3,460.98x = 10,369,513.18
  5. Step 5: Solve for x
    x = 10,369,513.18/3,460.98
  6. Step 6: Final answer
    x = 2,996.12

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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.