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Finding the Fourth Proportional to 8,259.76, 12,387.80 and 2,993.95

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Solution

The fourth proportional to 8,259.76, 12,387.80 and 2,993.95 is: 4,490.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,259.76 : 12,387.80 = 2,993.95 : x
  2. Step 2: Convert to fraction form
    8,259.76/12,387.80 = 2,993.95/x
  3. Step 3: Cross multiply
    8,259.76x = 12,387.80 × 2,993.95
  4. Step 4: Simplify right side
    8,259.76x = 37,088,376.90
  5. Step 5: Solve for x
    x = 37,088,376.90/8,259.76
  6. Step 6: Final answer
    x = 4,490.25

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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.