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Finding the Fourth Proportional to 1,579.54, 2,369.37 and 809.14

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Solution

The fourth proportional to 1,579.54, 2,369.37 and 809.14 is: 1,213.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579.54 : 2,369.37 = 809.14 : x
  2. Step 2: Convert to fraction form
    1,579.54/2,369.37 = 809.14/x
  3. Step 3: Cross multiply
    1,579.54x = 2,369.37 × 809.14
  4. Step 4: Simplify right side
    1,579.54x = 1,917,152.04
  5. Step 5: Solve for x
    x = 1,917,152.04/1,579.54
  6. Step 6: Final answer
    x = 1,213.74

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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.