Home / 8,743.40-13,115.10-5,402.60

Finding the Fourth Proportional to 8,743.40, 13,115.10 and 5,402.60

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Solution

The fourth proportional to 8,743.40, 13,115.10 and 5,402.60 is: 8,103.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,743.40 : 13,115.10 = 5,402.60 : x
  2. Step 2: Convert to fraction form
    8,743.40/13,115.10 = 5,402.60/x
  3. Step 3: Cross multiply
    8,743.40x = 13,115.10 × 5,402.60
  4. Step 4: Simplify right side
    8,743.40x = 70,855,639.26
  5. Step 5: Solve for x
    x = 70,855,639.26/8,743.40
  6. Step 6: Final answer
    x = 8,103.90

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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.