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Finding the Fourth Proportional to 2,609.92, 3,600.66 and 1,678.96

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Solution

The fourth proportional to 2,609.92, 3,600.66 and 1,678.96 is: 2,316.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,609.92 : 3,600.66 = 1,678.96 : x
  2. Step 2: Convert to fraction form
    2,609.92/3,600.66 = 1,678.96/x
  3. Step 3: Cross multiply
    2,609.92x = 3,600.66 × 1,678.96
  4. Step 4: Simplify right side
    2,609.92x = 6,045,364.11
  5. Step 5: Solve for x
    x = 6,045,364.11/2,609.92
  6. Step 6: Final answer
    x = 2,316.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.