Home / 1,579.40-2,179.86-1,530.76

Finding the Fourth Proportional to 1,579.40, 2,179.86 and 1,530.76

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Solution

The fourth proportional to 1,579.40, 2,179.86 and 1,530.76 is: 2,112.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579.40 : 2,179.86 = 1,530.76 : x
  2. Step 2: Convert to fraction form
    1,579.40/2,179.86 = 1,530.76/x
  3. Step 3: Cross multiply
    1,579.40x = 2,179.86 × 1,530.76
  4. Step 4: Simplify right side
    1,579.40x = 3,336,842.49
  5. Step 5: Solve for x
    x = 3,336,842.49/1,579.40
  6. Step 6: Final answer
    x = 2,112.73

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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.