Home / 8,743.20-13,102.80-5,613.60

Finding the Fourth Proportional to 8,743.20, 13,102.80 and 5,613.60

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Solution

The fourth proportional to 8,743.20, 13,102.80 and 5,613.60 is: 8,412.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,743.20 : 13,102.80 = 5,613.60 : x
  2. Step 2: Convert to fraction form
    8,743.20/13,102.80 = 5,613.60/x
  3. Step 3: Cross multiply
    8,743.20x = 13,102.80 × 5,613.60
  4. Step 4: Simplify right side
    8,743.20x = 73,553,878.08
  5. Step 5: Solve for x
    x = 73,553,878.08/8,743.20
  6. Step 6: Final answer
    x = 8,412.70

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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.