Home / 2,070.97-2,857.75-1,186.65

Finding the Fourth Proportional to 2,070.97, 2,857.75 and 1,186.65

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Solution

The fourth proportional to 2,070.97, 2,857.75 and 1,186.65 is: 1,637.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,070.97 : 2,857.75 = 1,186.65 : x
  2. Step 2: Convert to fraction form
    2,070.97/2,857.75 = 1,186.65/x
  3. Step 3: Cross multiply
    2,070.97x = 2,857.75 × 1,186.65
  4. Step 4: Simplify right side
    2,070.97x = 3,391,146.07
  5. Step 5: Solve for x
    x = 3,391,146.07/2,070.97
  6. Step 6: Final answer
    x = 1,637.47

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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.