Home / 7,757.39-10,705.43-4,220.83

Finding the Fourth Proportional to 7,757.39, 10,705.43 and 4,220.83

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Solution

The fourth proportional to 7,757.39, 10,705.43 and 4,220.83 is: 5,824.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,757.39 : 10,705.43 = 4,220.83 : x
  2. Step 2: Convert to fraction form
    7,757.39/10,705.43 = 4,220.83/x
  3. Step 3: Cross multiply
    7,757.39x = 10,705.43 × 4,220.83
  4. Step 4: Simplify right side
    7,757.39x = 45,185,808.21
  5. Step 5: Solve for x
    x = 45,185,808.21/7,757.39
  6. Step 6: Final answer
    x = 5,824.87

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Double scale
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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.