Home / 1,568.20-2,178.64-1,553.94

Finding the Fourth Proportional to 1,568.20, 2,178.64 and 1,553.94

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Solution

The fourth proportional to 1,568.20, 2,178.64 and 1,553.94 is: 2,158.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,568.20 : 2,178.64 = 1,553.94 : x
  2. Step 2: Convert to fraction form
    1,568.20/2,178.64 = 1,553.94/x
  3. Step 3: Cross multiply
    1,568.20x = 2,178.64 × 1,553.94
  4. Step 4: Simplify right side
    1,568.20x = 3,385,475.84
  5. Step 5: Solve for x
    x = 3,385,475.84/1,568.20
  6. Step 6: Final answer
    x = 2,158.83

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.