Home / 8,318.24-11,479.98-6,218.72

Finding the Fourth Proportional to 8,318.24, 11,479.98 and 6,218.72

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Solution

The fourth proportional to 8,318.24, 11,479.98 and 6,218.72 is: 8,582.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.24 : 11,479.98 = 6,218.72 : x
  2. Step 2: Convert to fraction form
    8,318.24/11,479.98 = 6,218.72/x
  3. Step 3: Cross multiply
    8,318.24x = 11,479.98 × 6,218.72
  4. Step 4: Simplify right side
    8,318.24x = 71,390,781.23
  5. Step 5: Solve for x
    x = 71,390,781.23/8,318.24
  6. Step 6: Final answer
    x = 8,582.44

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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.