Home / 8,416.50-11,616.12-6,619.92

Finding the Fourth Proportional to 8,416.50, 11,616.12 and 6,619.92

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Solution

The fourth proportional to 8,416.50, 11,616.12 and 6,619.92 is: 9,136.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,416.50 : 11,616.12 = 6,619.92 : x
  2. Step 2: Convert to fraction form
    8,416.50/11,616.12 = 6,619.92/x
  3. Step 3: Cross multiply
    8,416.50x = 11,616.12 × 6,619.92
  4. Step 4: Simplify right side
    8,416.50x = 76,897,785.11
  5. Step 5: Solve for x
    x = 76,897,785.11/8,416.50
  6. Step 6: Final answer
    x = 9,136.55

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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.