Home / 8,990.12-12,403.44-5,010.48

Finding the Fourth Proportional to 8,990.12, 12,403.44 and 5,010.48

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Solution

The fourth proportional to 8,990.12, 12,403.44 and 5,010.48 is: 6,912.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.12 : 12,403.44 = 5,010.48 : x
  2. Step 2: Convert to fraction form
    8,990.12/12,403.44 = 5,010.48/x
  3. Step 3: Cross multiply
    8,990.12x = 12,403.44 × 5,010.48
  4. Step 4: Simplify right side
    8,990.12x = 62,147,188.05
  5. Step 5: Solve for x
    x = 62,147,188.05/8,990.12
  6. Step 6: Final answer
    x = 6,912.83

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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.