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Finding the Fourth Proportional to 3,539.26, 5,308.86 and 906.76

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Solution

The fourth proportional to 3,539.26, 5,308.86 and 906.76 is: 1,360.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,539.26 : 5,308.86 = 906.76 : x
  2. Step 2: Convert to fraction form
    3,539.26/5,308.86 = 906.76/x
  3. Step 3: Cross multiply
    3,539.26x = 5,308.86 × 906.76
  4. Step 4: Simplify right side
    3,539.26x = 4,813,871.93
  5. Step 5: Solve for x
    x = 4,813,871.93/3,539.26
  6. Step 6: Final answer
    x = 1,360.13

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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.