Home / 7,757.85-10,705.66-4,221.07

Finding the Fourth Proportional to 7,757.85, 10,705.66 and 4,221.07

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Solution

The fourth proportional to 7,757.85, 10,705.66 and 4,221.07 is: 5,824.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,757.85 : 10,705.66 = 4,221.07 : x
  2. Step 2: Convert to fraction form
    7,757.85/10,705.66 = 4,221.07/x
  3. Step 3: Cross multiply
    7,757.85x = 10,705.66 × 4,221.07
  4. Step 4: Simplify right side
    7,757.85x = 45,189,340.26
  5. Step 5: Solve for x
    x = 45,189,340.26/7,757.85
  6. Step 6: Final answer
    x = 5,824.98

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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.