Home / 8,536.20-12,812.40-5,255.70

Finding the Fourth Proportional to 8,536.20, 12,812.40 and 5,255.70

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Solution

The fourth proportional to 8,536.20, 12,812.40 and 5,255.70 is: 7,888.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,536.20 : 12,812.40 = 5,255.70 : x
  2. Step 2: Convert to fraction form
    8,536.20/12,812.40 = 5,255.70/x
  3. Step 3: Cross multiply
    8,536.20x = 12,812.40 × 5,255.70
  4. Step 4: Simplify right side
    8,536.20x = 67,338,130.68
  5. Step 5: Solve for x
    x = 67,338,130.68/8,536.20
  6. Step 6: Final answer
    x = 7,888.54

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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.