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Finding the Fourth Proportional to 1,579.02, 2,179.19 and 871.01

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Solution

The fourth proportional to 1,579.02, 2,179.19 and 871.01 is: 1,202.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579.02 : 2,179.19 = 871.01 : x
  2. Step 2: Convert to fraction form
    1,579.02/2,179.19 = 871.01/x
  3. Step 3: Cross multiply
    1,579.02x = 2,179.19 × 871.01
  4. Step 4: Simplify right side
    1,579.02x = 1,898,081.03
  5. Step 5: Solve for x
    x = 1,898,081.03/1,579.02
  6. Step 6: Final answer
    x = 1,202.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.