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Finding the Fourth Proportional to 2,861.26, 4,292.18 and 886.82

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Solution

The fourth proportional to 2,861.26, 4,292.18 and 886.82 is: 1,330.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.26 : 4,292.18 = 886.82 : x
  2. Step 2: Convert to fraction form
    2,861.26/4,292.18 = 886.82/x
  3. Step 3: Cross multiply
    2,861.26x = 4,292.18 × 886.82
  4. Step 4: Simplify right side
    2,861.26x = 3,806,391.07
  5. Step 5: Solve for x
    x = 3,806,391.07/2,861.26
  6. Step 6: Final answer
    x = 1,330.32

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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.