Home / 7,420.80-10,240.82-4,063.56

Finding the Fourth Proportional to 7,420.80, 10,240.82 and 4,063.56

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Solution

The fourth proportional to 7,420.80, 10,240.82 and 4,063.56 is: 5,607.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.80 : 10,240.82 = 4,063.56 : x
  2. Step 2: Convert to fraction form
    7,420.80/10,240.82 = 4,063.56/x
  3. Step 3: Cross multiply
    7,420.80x = 10,240.82 × 4,063.56
  4. Step 4: Simplify right side
    7,420.80x = 41,614,186.52
  5. Step 5: Solve for x
    x = 41,614,186.52/7,420.80
  6. Step 6: Final answer
    x = 5,607.78

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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.