Home / 7,612.06-11,422.11-5,405.15

Finding the Fourth Proportional to 7,612.06, 11,422.11 and 5,405.15

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Solution

The fourth proportional to 7,612.06, 11,422.11 and 5,405.15 is: 8,110.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,612.06 : 11,422.11 = 5,405.15 : x
  2. Step 2: Convert to fraction form
    7,612.06/11,422.11 = 5,405.15/x
  3. Step 3: Cross multiply
    7,612.06x = 11,422.11 × 5,405.15
  4. Step 4: Simplify right side
    7,612.06x = 61,738,217.87
  5. Step 5: Solve for x
    x = 61,738,217.87/7,612.06
  6. Step 6: Final answer
    x = 8,110.58

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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.