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Finding the Fourth Proportional to 2,139.60, 3,209.28 and 600.56

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Solution

The fourth proportional to 2,139.60, 3,209.28 and 600.56 is: 900.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,139.60 : 3,209.28 = 600.56 : x
  2. Step 2: Convert to fraction form
    2,139.60/3,209.28 = 600.56/x
  3. Step 3: Cross multiply
    2,139.60x = 3,209.28 × 600.56
  4. Step 4: Simplify right side
    2,139.60x = 1,927,365.20
  5. Step 5: Solve for x
    x = 1,927,365.20/2,139.60
  6. Step 6: Final answer
    x = 900.81

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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.