Home / 8,921.99-12,284.24-6,790.68

Finding the Fourth Proportional to 8,921.99, 12,284.24 and 6,790.68

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Solution

The fourth proportional to 8,921.99, 12,284.24 and 6,790.68 is: 9,349.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.99 : 12,284.24 = 6,790.68 : x
  2. Step 2: Convert to fraction form
    8,921.99/12,284.24 = 6,790.68/x
  3. Step 3: Cross multiply
    8,921.99x = 12,284.24 × 6,790.68
  4. Step 4: Simplify right side
    8,921.99x = 83,418,308.93
  5. Step 5: Solve for x
    x = 83,418,308.93/8,921.99
  6. Step 6: Final answer
    x = 9,349.75

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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.