Home / 2,660.70-3,987.93-1,098.77

Finding the Fourth Proportional to 2,660.70, 3,987.93 and 1,098.77

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Solution

The fourth proportional to 2,660.70, 3,987.93 and 1,098.77 is: 1,646.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,660.70 : 3,987.93 = 1,098.77 : x
  2. Step 2: Convert to fraction form
    2,660.70/3,987.93 = 1,098.77/x
  3. Step 3: Cross multiply
    2,660.70x = 3,987.93 × 1,098.77
  4. Step 4: Simplify right side
    2,660.70x = 4,381,802.03
  5. Step 5: Solve for x
    x = 4,381,802.03/2,660.70
  6. Step 6: Final answer
    x = 1,646.86

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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.