Home / 2,591.76-3,579.48-1,965.36

Finding the Fourth Proportional to 2,591.76, 3,579.48 and 1,965.36

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Solution

The fourth proportional to 2,591.76, 3,579.48 and 1,965.36 is: 2,714.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,591.76 : 3,579.48 = 1,965.36 : x
  2. Step 2: Convert to fraction form
    2,591.76/3,579.48 = 1,965.36/x
  3. Step 3: Cross multiply
    2,591.76x = 3,579.48 × 1,965.36
  4. Step 4: Simplify right side
    2,591.76x = 7,034,966.81
  5. Step 5: Solve for x
    x = 7,034,966.81/2,591.76
  6. Step 6: Final answer
    x = 2,714.36

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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.