Home / 7,785.28-10,743.92-4,428.57

Finding the Fourth Proportional to 7,785.28, 10,743.92 and 4,428.57

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Solution

The fourth proportional to 7,785.28, 10,743.92 and 4,428.57 is: 6,111.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,785.28 : 10,743.92 = 4,428.57 : x
  2. Step 2: Convert to fraction form
    7,785.28/10,743.92 = 4,428.57/x
  3. Step 3: Cross multiply
    7,785.28x = 10,743.92 × 4,428.57
  4. Step 4: Simplify right side
    7,785.28x = 47,580,179.65
  5. Step 5: Solve for x
    x = 47,580,179.65/7,785.28
  6. Step 6: Final answer
    x = 6,111.56

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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.