Home / 7,719.91-10,645.66-6,866.47

Finding the Fourth Proportional to 7,719.91, 10,645.66 and 6,866.47

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Solution

The fourth proportional to 7,719.91, 10,645.66 and 6,866.47 is: 9,468.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.91 : 10,645.66 = 6,866.47 : x
  2. Step 2: Convert to fraction form
    7,719.91/10,645.66 = 6,866.47/x
  3. Step 3: Cross multiply
    7,719.91x = 10,645.66 × 6,866.47
  4. Step 4: Simplify right side
    7,719.91x = 73,098,105.02
  5. Step 5: Solve for x
    x = 73,098,105.02/7,719.91
  6. Step 6: Final answer
    x = 9,468.78

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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.