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Finding the Fourth Proportional to 3,546.86, 4,892.91 and 2,129.86

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Solution

The fourth proportional to 3,546.86, 4,892.91 and 2,129.86 is: 2,938.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,546.86 : 4,892.91 = 2,129.86 : x
  2. Step 2: Convert to fraction form
    3,546.86/4,892.91 = 2,129.86/x
  3. Step 3: Cross multiply
    3,546.86x = 4,892.91 × 2,129.86
  4. Step 4: Simplify right side
    3,546.86x = 10,421,211.42
  5. Step 5: Solve for x
    x = 10,421,211.42/3,546.86
  6. Step 6: Final answer
    x = 2,938.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.