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Finding the Fourth Proportional to 5,890.86, 8,128.98 and 3,372.84

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Solution

The fourth proportional to 5,890.86, 8,128.98 and 3,372.84 is: 4,654.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,890.86 : 8,128.98 = 3,372.84 : x
  2. Step 2: Convert to fraction form
    5,890.86/8,128.98 = 3,372.84/x
  3. Step 3: Cross multiply
    5,890.86x = 8,128.98 × 3,372.84
  4. Step 4: Simplify right side
    5,890.86x = 27,417,748.90
  5. Step 5: Solve for x
    x = 27,417,748.90/5,890.86
  6. Step 6: Final answer
    x = 4,654.29

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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.