Home / 7,415.38-10,236.90-5,069.80

Finding the Fourth Proportional to 7,415.38, 10,236.90 and 5,069.80

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Solution

The fourth proportional to 7,415.38, 10,236.90 and 5,069.80 is: 6,998.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,415.38 : 10,236.90 = 5,069.80 : x
  2. Step 2: Convert to fraction form
    7,415.38/10,236.90 = 5,069.80/x
  3. Step 3: Cross multiply
    7,415.38x = 10,236.90 × 5,069.80
  4. Step 4: Simplify right side
    7,415.38x = 51,899,035.62
  5. Step 5: Solve for x
    x = 51,899,035.62/7,415.38
  6. Step 6: Final answer
    x = 6,998.84

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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.