Home / 2,172.50-2,998.06-1,177.79

Finding the Fourth Proportional to 2,172.50, 2,998.06 and 1,177.79

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Solution

The fourth proportional to 2,172.50, 2,998.06 and 1,177.79 is: 1,625.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.50 : 2,998.06 = 1,177.79 : x
  2. Step 2: Convert to fraction form
    2,172.50/2,998.06 = 1,177.79/x
  3. Step 3: Cross multiply
    2,172.50x = 2,998.06 × 1,177.79
  4. Step 4: Simplify right side
    2,172.50x = 3,531,090.64
  5. Step 5: Solve for x
    x = 3,531,090.64/2,172.50
  6. Step 6: Final answer
    x = 1,625.35

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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.