Home / 6,400.79-9,601.21-3,111.06

Finding the Fourth Proportional to 6,400.79, 9,601.21 and 3,111.06

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Solution

The fourth proportional to 6,400.79, 9,601.21 and 3,111.06 is: 4,666.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,400.79 : 9,601.21 = 3,111.06 : x
  2. Step 2: Convert to fraction form
    6,400.79/9,601.21 = 3,111.06/x
  3. Step 3: Cross multiply
    6,400.79x = 9,601.21 × 3,111.06
  4. Step 4: Simplify right side
    6,400.79x = 29,869,997.96
  5. Step 5: Solve for x
    x = 29,869,997.96/6,400.79
  6. Step 6: Final answer
    x = 4,666.61

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Similar ratio
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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.