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Finding the Fourth Proportional to 3,568.79, 5,353.55 and 1,228.49

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Solution

The fourth proportional to 3,568.79, 5,353.55 and 1,228.49 is: 1,842.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,568.79 : 5,353.55 = 1,228.49 : x
  2. Step 2: Convert to fraction form
    3,568.79/5,353.55 = 1,228.49/x
  3. Step 3: Cross multiply
    3,568.79x = 5,353.55 × 1,228.49
  4. Step 4: Simplify right side
    3,568.79x = 6,576,777.74
  5. Step 5: Solve for x
    x = 6,576,777.74/3,568.79
  6. Step 6: Final answer
    x = 1,842.86

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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.