Home / 5,971.10-8,239.80-3,979.70

Finding the Fourth Proportional to 5,971.10, 8,239.80 and 3,979.70

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Solution

The fourth proportional to 5,971.10, 8,239.80 and 3,979.70 is: 5,491.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,971.10 : 8,239.80 = 3,979.70 : x
  2. Step 2: Convert to fraction form
    5,971.10/8,239.80 = 3,979.70/x
  3. Step 3: Cross multiply
    5,971.10x = 8,239.80 × 3,979.70
  4. Step 4: Simplify right side
    5,971.10x = 32,791,932.06
  5. Step 5: Solve for x
    x = 32,791,932.06/5,971.10
  6. Step 6: Final answer
    x = 5,491.77

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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.