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Finding the Fourth Proportional to 8,165.74, 12,248.40 and 2,619.47

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Solution

The fourth proportional to 8,165.74, 12,248.40 and 2,619.47 is: 3,929.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,165.74 : 12,248.40 = 2,619.47 : x
  2. Step 2: Convert to fraction form
    8,165.74/12,248.40 = 2,619.47/x
  3. Step 3: Cross multiply
    8,165.74x = 12,248.40 × 2,619.47
  4. Step 4: Simplify right side
    8,165.74x = 32,084,316.35
  5. Step 5: Solve for x
    x = 32,084,316.35/8,165.74
  6. Step 6: Final answer
    x = 3,929.14

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1.5x scale

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.