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Finding the Fourth Proportional to 8,181.40, 11,293.80 and 5,532.40

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Solution

The fourth proportional to 8,181.40, 11,293.80 and 5,532.40 is: 7,637.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,181.40 : 11,293.80 = 5,532.40 : x
  2. Step 2: Convert to fraction form
    8,181.40/11,293.80 = 5,532.40/x
  3. Step 3: Cross multiply
    8,181.40x = 11,293.80 × 5,532.40
  4. Step 4: Simplify right side
    8,181.40x = 62,481,819.12
  5. Step 5: Solve for x
    x = 62,481,819.12/8,181.40
  6. Step 6: Final answer
    x = 7,637.06

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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.