Home / 2,118.87-3,172.80-1,462.77

Finding the Fourth Proportional to 2,118.87, 3,172.80 and 1,462.77

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Solution

The fourth proportional to 2,118.87, 3,172.80 and 1,462.77 is: 2,190.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.87 : 3,172.80 = 1,462.77 : x
  2. Step 2: Convert to fraction form
    2,118.87/3,172.80 = 1,462.77/x
  3. Step 3: Cross multiply
    2,118.87x = 3,172.80 × 1,462.77
  4. Step 4: Simplify right side
    2,118.87x = 4,641,076.66
  5. Step 5: Solve for x
    x = 4,641,076.66/2,118.87
  6. Step 6: Final answer
    x = 2,190.35

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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.