Home / 7,928.78-10,936.76-5,099.84

Finding the Fourth Proportional to 7,928.78, 10,936.76 and 5,099.84

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Solution

The fourth proportional to 7,928.78, 10,936.76 and 5,099.84 is: 7,034.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,928.78 : 10,936.76 = 5,099.84 : x
  2. Step 2: Convert to fraction form
    7,928.78/10,936.76 = 5,099.84/x
  3. Step 3: Cross multiply
    7,928.78x = 10,936.76 × 5,099.84
  4. Step 4: Simplify right side
    7,928.78x = 55,775,711.53
  5. Step 5: Solve for x
    x = 55,775,711.53/7,928.78
  6. Step 6: Final answer
    x = 7,034.59

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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.