Home / 2,172.60-2,998.19-1,177.87

Finding the Fourth Proportional to 2,172.60, 2,998.19 and 1,177.87

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Solution

The fourth proportional to 2,172.60, 2,998.19 and 1,177.87 is: 1,625.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.60 : 2,998.19 = 1,177.87 : x
  2. Step 2: Convert to fraction form
    2,172.60/2,998.19 = 1,177.87/x
  3. Step 3: Cross multiply
    2,172.60x = 2,998.19 × 1,177.87
  4. Step 4: Simplify right side
    2,172.60x = 3,531,478.06
  5. Step 5: Solve for x
    x = 3,531,478.06/2,172.60
  6. Step 6: Final answer
    x = 1,625.46

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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.