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Finding the Fourth Proportional to 8,387.42, 11,580.06 and 5,204.12

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Solution

The fourth proportional to 8,387.42, 11,580.06 and 5,204.12 is: 7,185.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.42 : 11,580.06 = 5,204.12 : x
  2. Step 2: Convert to fraction form
    8,387.42/11,580.06 = 5,204.12/x
  3. Step 3: Cross multiply
    8,387.42x = 11,580.06 × 5,204.12
  4. Step 4: Simplify right side
    8,387.42x = 60,264,021.85
  5. Step 5: Solve for x
    x = 60,264,021.85/8,387.42
  6. Step 6: Final answer
    x = 7,185.05

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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.