Home / 8,518.77-12,781.80-4,136.27

Finding the Fourth Proportional to 8,518.77, 12,781.80 and 4,136.27

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Solution

The fourth proportional to 8,518.77, 12,781.80 and 4,136.27 is: 6,206.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,518.77 : 12,781.80 = 4,136.27 : x
  2. Step 2: Convert to fraction form
    8,518.77/12,781.80 = 4,136.27/x
  3. Step 3: Cross multiply
    8,518.77x = 12,781.80 × 4,136.27
  4. Step 4: Simplify right side
    8,518.77x = 52,868,911.98
  5. Step 5: Solve for x
    x = 52,868,911.98/8,518.77
  6. Step 6: Final answer
    x = 6,206.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.