Home / 6,621.70-9,939.84-5,243.89

Finding the Fourth Proportional to 6,621.70, 9,939.84 and 5,243.89

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Solution

The fourth proportional to 6,621.70, 9,939.84 and 5,243.89 is: 7,871.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.70 : 9,939.84 = 5,243.89 : x
  2. Step 2: Convert to fraction form
    6,621.70/9,939.84 = 5,243.89/x
  3. Step 3: Cross multiply
    6,621.70x = 9,939.84 × 5,243.89
  4. Step 4: Simplify right side
    6,621.70x = 52,123,427.58
  5. Step 5: Solve for x
    x = 52,123,427.58/6,621.70
  6. Step 6: Final answer
    x = 7,871.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.