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Finding the Fourth Proportional to 5,890.42, 8,129.21 and 3,237.87

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Solution

The fourth proportional to 5,890.42, 8,129.21 and 3,237.87 is: 4,468.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,890.42 : 8,129.21 = 3,237.87 : x
  2. Step 2: Convert to fraction form
    5,890.42/8,129.21 = 3,237.87/x
  3. Step 3: Cross multiply
    5,890.42x = 8,129.21 × 3,237.87
  4. Step 4: Simplify right side
    5,890.42x = 26,321,357.69
  5. Step 5: Solve for x
    x = 26,321,357.69/5,890.42
  6. Step 6: Final answer
    x = 4,468.50

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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.