Home / 7,769.90-10,726.36-4,940.12

Finding the Fourth Proportional to 7,769.90, 10,726.36 and 4,940.12

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Solution

The fourth proportional to 7,769.90, 10,726.36 and 4,940.12 is: 6,819.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,769.90 : 10,726.36 = 4,940.12 : x
  2. Step 2: Convert to fraction form
    7,769.90/10,726.36 = 4,940.12/x
  3. Step 3: Cross multiply
    7,769.90x = 10,726.36 × 4,940.12
  4. Step 4: Simplify right side
    7,769.90x = 52,989,505.56
  5. Step 5: Solve for x
    x = 52,989,505.56/7,769.90
  6. Step 6: Final answer
    x = 6,819.84

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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.