Home / 2,165.07-2,987.71-1,207.96

Finding the Fourth Proportional to 2,165.07, 2,987.71 and 1,207.96

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Solution

The fourth proportional to 2,165.07, 2,987.71 and 1,207.96 is: 1,666.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.07 : 2,987.71 = 1,207.96 : x
  2. Step 2: Convert to fraction form
    2,165.07/2,987.71 = 1,207.96/x
  3. Step 3: Cross multiply
    2,165.07x = 2,987.71 × 1,207.96
  4. Step 4: Simplify right side
    2,165.07x = 3,609,034.17
  5. Step 5: Solve for x
    x = 3,609,034.17/2,165.07
  6. Step 6: Final answer
    x = 1,666.94

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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.