Home / 5,677.69-8,516.57-1,979.90

Finding the Fourth Proportional to 5,677.69, 8,516.57 and 1,979.90

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Solution

The fourth proportional to 5,677.69, 8,516.57 and 1,979.90 is: 2,969.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,677.69 : 8,516.57 = 1,979.90 : x
  2. Step 2: Convert to fraction form
    5,677.69/8,516.57 = 1,979.90/x
  3. Step 3: Cross multiply
    5,677.69x = 8,516.57 × 1,979.90
  4. Step 4: Simplify right side
    5,677.69x = 16,861,965.92
  5. Step 5: Solve for x
    x = 16,861,965.92/5,677.69
  6. Step 6: Final answer
    x = 2,969.87

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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.