Home / 7,785.38-10,743.82-4,990.88

Finding the Fourth Proportional to 7,785.38, 10,743.82 and 4,990.88

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Solution

The fourth proportional to 7,785.38, 10,743.82 and 4,990.88 is: 6,887.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,785.38 : 10,743.82 = 4,990.88 : x
  2. Step 2: Convert to fraction form
    7,785.38/10,743.82 = 4,990.88/x
  3. Step 3: Cross multiply
    7,785.38x = 10,743.82 × 4,990.88
  4. Step 4: Simplify right side
    7,785.38x = 53,621,116.36
  5. Step 5: Solve for x
    x = 53,621,116.36/7,785.38
  6. Step 6: Final answer
    x = 6,887.41

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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.