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Finding the Fourth Proportional to 8,402.13, 12,601.95 and 2,855.64

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Solution

The fourth proportional to 8,402.13, 12,601.95 and 2,855.64 is: 4,283.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,402.13 : 12,601.95 = 2,855.64 : x
  2. Step 2: Convert to fraction form
    8,402.13/12,601.95 = 2,855.64/x
  3. Step 3: Cross multiply
    8,402.13x = 12,601.95 × 2,855.64
  4. Step 4: Simplify right side
    8,402.13x = 35,986,632.50
  5. Step 5: Solve for x
    x = 35,986,632.50/8,402.13
  6. Step 6: Final answer
    x = 4,283.04

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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.