Home / 8,694.36-11,996.37-5,158.72

Finding the Fourth Proportional to 8,694.36, 11,996.37 and 5,158.72

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Solution

The fourth proportional to 8,694.36, 11,996.37 and 5,158.72 is: 7,117.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,694.36 : 11,996.37 = 5,158.72 : x
  2. Step 2: Convert to fraction form
    8,694.36/11,996.37 = 5,158.72/x
  3. Step 3: Cross multiply
    8,694.36x = 11,996.37 × 5,158.72
  4. Step 4: Simplify right side
    8,694.36x = 61,885,913.85
  5. Step 5: Solve for x
    x = 61,885,913.85/8,694.36
  6. Step 6: Final answer
    x = 7,117.94

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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.