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Finding the Fourth Proportional to 2,145.60, 3,218.28 and 606.56

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Solution

The fourth proportional to 2,145.60, 3,218.28 and 606.56 is: 909.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.60 : 3,218.28 = 606.56 : x
  2. Step 2: Convert to fraction form
    2,145.60/3,218.28 = 606.56/x
  3. Step 3: Cross multiply
    2,145.60x = 3,218.28 × 606.56
  4. Step 4: Simplify right side
    2,145.60x = 1,952,079.92
  5. Step 5: Solve for x
    x = 1,952,079.92/2,145.60
  6. Step 6: Final answer
    x = 909.81

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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.