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Finding the Fourth Proportional to 8,118.79, 12,182.04 and 5,623.82

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Solution

The fourth proportional to 8,118.79, 12,182.04 and 5,623.82 is: 8,438.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.79 : 12,182.04 = 5,623.82 : x
  2. Step 2: Convert to fraction form
    8,118.79/12,182.04 = 5,623.82/x
  3. Step 3: Cross multiply
    8,118.79x = 12,182.04 × 5,623.82
  4. Step 4: Simplify right side
    8,118.79x = 68,509,600.19
  5. Step 5: Solve for x
    x = 68,509,600.19/8,118.79
  6. Step 6: Final answer
    x = 8,438.40

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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.