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Finding the Fourth Proportional to 2,451.96, 3,677.94 and 990.16

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Solution

The fourth proportional to 2,451.96, 3,677.94 and 990.16 is: 1,485.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,451.96 : 3,677.94 = 990.16 : x
  2. Step 2: Convert to fraction form
    2,451.96/3,677.94 = 990.16/x
  3. Step 3: Cross multiply
    2,451.96x = 3,677.94 × 990.16
  4. Step 4: Simplify right side
    2,451.96x = 3,641,749.07
  5. Step 5: Solve for x
    x = 3,641,749.07/2,451.96
  6. Step 6: Final answer
    x = 1,485.24

Related Problems

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Half scale
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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.