Home / 7,928.91-10,939.10-4,942.26

Finding the Fourth Proportional to 7,928.91, 10,939.10 and 4,942.26

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Solution

The fourth proportional to 7,928.91, 10,939.10 and 4,942.26 is: 6,818.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,928.91 : 10,939.10 = 4,942.26 : x
  2. Step 2: Convert to fraction form
    7,928.91/10,939.10 = 4,942.26/x
  3. Step 3: Cross multiply
    7,928.91x = 10,939.10 × 4,942.26
  4. Step 4: Simplify right side
    7,928.91x = 54,063,851.65
  5. Step 5: Solve for x
    x = 54,063,851.65/7,928.91
  6. Step 6: Final answer
    x = 6,818.57

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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.