Home / 7,765.05-10,715.82-4,228.31

Finding the Fourth Proportional to 7,765.05, 10,715.82 and 4,228.31

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Solution

The fourth proportional to 7,765.05, 10,715.82 and 4,228.31 is: 5,835.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,765.05 : 10,715.82 = 4,228.31 : x
  2. Step 2: Convert to fraction form
    7,765.05/10,715.82 = 4,228.31/x
  3. Step 3: Cross multiply
    7,765.05x = 10,715.82 × 4,228.31
  4. Step 4: Simplify right side
    7,765.05x = 45,309,755.29
  5. Step 5: Solve for x
    x = 45,309,755.29/7,765.05
  6. Step 6: Final answer
    x = 5,835.09

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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.