Home / 8,972.98-12,379.03-5,785.83

Finding the Fourth Proportional to 8,972.98, 12,379.03 and 5,785.83

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Solution

The fourth proportional to 8,972.98, 12,379.03 and 5,785.83 is: 7,982.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.98 : 12,379.03 = 5,785.83 : x
  2. Step 2: Convert to fraction form
    8,972.98/12,379.03 = 5,785.83/x
  3. Step 3: Cross multiply
    8,972.98x = 12,379.03 × 5,785.83
  4. Step 4: Simplify right side
    8,972.98x = 71,622,948.68
  5. Step 5: Solve for x
    x = 71,622,948.68/8,972.98
  6. Step 6: Final answer
    x = 7,982.07

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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.