Home / 7,785.20-10,743.84-4,427.90

Finding the Fourth Proportional to 7,785.20, 10,743.84 and 4,427.90

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Solution

The fourth proportional to 7,785.20, 10,743.84 and 4,427.90 is: 6,110.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,785.20 : 10,743.84 = 4,427.90 : x
  2. Step 2: Convert to fraction form
    7,785.20/10,743.84 = 4,427.90/x
  3. Step 3: Cross multiply
    7,785.20x = 10,743.84 × 4,427.90
  4. Step 4: Simplify right side
    7,785.20x = 47,572,649.14
  5. Step 5: Solve for x
    x = 47,572,649.14/7,785.20
  6. Step 6: Final answer
    x = 6,110.65

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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.