Home / 7,912.76-11,876.28-4,218.08

Finding the Fourth Proportional to 7,912.76, 11,876.28 and 4,218.08

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Solution

The fourth proportional to 7,912.76, 11,876.28 and 4,218.08 is: 6,330.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.76 : 11,876.28 = 4,218.08 : x
  2. Step 2: Convert to fraction form
    7,912.76/11,876.28 = 4,218.08/x
  3. Step 3: Cross multiply
    7,912.76x = 11,876.28 × 4,218.08
  4. Step 4: Simplify right side
    7,912.76x = 50,095,099.14
  5. Step 5: Solve for x
    x = 50,095,099.14/7,912.76
  6. Step 6: Final answer
    x = 6,330.93

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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.