Home / 2,167.39-2,990.98-1,172.65

Finding the Fourth Proportional to 2,167.39, 2,990.98 and 1,172.65

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Solution

The fourth proportional to 2,167.39, 2,990.98 and 1,172.65 is: 1,618.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,167.39 : 2,990.98 = 1,172.65 : x
  2. Step 2: Convert to fraction form
    2,167.39/2,990.98 = 1,172.65/x
  3. Step 3: Cross multiply
    2,167.39x = 2,990.98 × 1,172.65
  4. Step 4: Simplify right side
    2,167.39x = 3,507,372.29
  5. Step 5: Solve for x
    x = 3,507,372.29/2,167.39
  6. Step 6: Final answer
    x = 1,618.24

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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.