Home / 8,389.31-11,636.46-8,090.11

Finding the Fourth Proportional to 8,389.31, 11,636.46 and 8,090.11

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Solution

The fourth proportional to 8,389.31, 11,636.46 and 8,090.11 is: 11,221.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,389.31 : 11,636.46 = 8,090.11 : x
  2. Step 2: Convert to fraction form
    8,389.31/11,636.46 = 8,090.11/x
  3. Step 3: Cross multiply
    8,389.31x = 11,636.46 × 8,090.11
  4. Step 4: Simplify right side
    8,389.31x = 94,140,255.96
  5. Step 5: Solve for x
    x = 94,140,255.96/8,389.31
  6. Step 6: Final answer
    x = 11,221.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.