Home / 8,650.28-11,920.74-6,288.68

Finding the Fourth Proportional to 8,650.28, 11,920.74 and 6,288.68

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Solution

The fourth proportional to 8,650.28, 11,920.74 and 6,288.68 is: 8,666.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,650.28 : 11,920.74 = 6,288.68 : x
  2. Step 2: Convert to fraction form
    8,650.28/11,920.74 = 6,288.68/x
  3. Step 3: Cross multiply
    8,650.28x = 11,920.74 × 6,288.68
  4. Step 4: Simplify right side
    8,650.28x = 74,965,719.22
  5. Step 5: Solve for x
    x = 74,965,719.22/8,650.28
  6. Step 6: Final answer
    x = 8,666.28

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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.