Home / 6,386.58-8,814.69-3,996.90

Finding the Fourth Proportional to 6,386.58, 8,814.69 and 3,996.90

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Solution

The fourth proportional to 6,386.58, 8,814.69 and 3,996.90 is: 5,516.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,386.58 : 8,814.69 = 3,996.90 : x
  2. Step 2: Convert to fraction form
    6,386.58/8,814.69 = 3,996.90/x
  3. Step 3: Cross multiply
    6,386.58x = 8,814.69 × 3,996.90
  4. Step 4: Simplify right side
    6,386.58x = 35,231,434.46
  5. Step 5: Solve for x
    x = 35,231,434.46/6,386.58
  6. Step 6: Final answer
    x = 5,516.48

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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.