Home / 5,231.67-7,847.87-2,111.70

Finding the Fourth Proportional to 5,231.67, 7,847.87 and 2,111.70

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Solution

The fourth proportional to 5,231.67, 7,847.87 and 2,111.70 is: 3,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,231.67 : 7,847.87 = 2,111.70 : x
  2. Step 2: Convert to fraction form
    5,231.67/7,847.87 = 2,111.70/x
  3. Step 3: Cross multiply
    5,231.67x = 7,847.87 × 2,111.70
  4. Step 4: Simplify right side
    5,231.67x = 16,572,347.08
  5. Step 5: Solve for x
    x = 16,572,347.08/5,231.67
  6. Step 6: Final answer
    x = 3,167.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.