Home / 1,579.10-2,178.74-949.66

Finding the Fourth Proportional to 1,579.10, 2,178.74 and 949.66

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Solution

The fourth proportional to 1,579.10, 2,178.74 and 949.66 is: 1,310.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579.10 : 2,178.74 = 949.66 : x
  2. Step 2: Convert to fraction form
    1,579.10/2,178.74 = 949.66/x
  3. Step 3: Cross multiply
    1,579.10x = 2,178.74 × 949.66
  4. Step 4: Simplify right side
    1,579.10x = 2,069,062.23
  5. Step 5: Solve for x
    x = 2,069,062.23/1,579.10
  6. Step 6: Final answer
    x = 1,310.28

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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.