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Finding the Fourth Proportional to 3,539.37, 5,309.01 and 906.86

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Solution

The fourth proportional to 3,539.37, 5,309.01 and 906.86 is: 1,360.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,539.37 : 5,309.01 = 906.86 : x
  2. Step 2: Convert to fraction form
    3,539.37/5,309.01 = 906.86/x
  3. Step 3: Cross multiply
    3,539.37x = 5,309.01 × 906.86
  4. Step 4: Simplify right side
    3,539.37x = 4,814,502.26
  5. Step 5: Solve for x
    x = 4,814,502.26/3,539.37
  6. Step 6: Final answer
    x = 1,360.27

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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.