Home / 8,137.47-11,209.62-6,938.55

Finding the Fourth Proportional to 8,137.47, 11,209.62 and 6,938.55

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Solution

The fourth proportional to 8,137.47, 11,209.62 and 6,938.55 is: 9,558.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,137.47 : 11,209.62 = 6,938.55 : x
  2. Step 2: Convert to fraction form
    8,137.47/11,209.62 = 6,938.55/x
  3. Step 3: Cross multiply
    8,137.47x = 11,209.62 × 6,938.55
  4. Step 4: Simplify right side
    8,137.47x = 77,778,452.80
  5. Step 5: Solve for x
    x = 77,778,452.80/8,137.47
  6. Step 6: Final answer
    x = 9,558.07

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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.