Home / 6,516.14-8,988.85-3,998.79

Finding the Fourth Proportional to 6,516.14, 8,988.85 and 3,998.79

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Solution

The fourth proportional to 6,516.14, 8,988.85 and 3,998.79 is: 5,516.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,516.14 : 8,988.85 = 3,998.79 : x
  2. Step 2: Convert to fraction form
    6,516.14/8,988.85 = 3,998.79/x
  3. Step 3: Cross multiply
    6,516.14x = 8,988.85 × 3,998.79
  4. Step 4: Simplify right side
    6,516.14x = 35,944,523.49
  5. Step 5: Solve for x
    x = 35,944,523.49/6,516.14
  6. Step 6: Final answer
    x = 5,516.23

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Half scale
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Double scale
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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.