Home / 1,891.67-2,610.08-1,145.61

Finding the Fourth Proportional to 1,891.67, 2,610.08 and 1,145.61

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Solution

The fourth proportional to 1,891.67, 2,610.08 and 1,145.61 is: 1,580.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.67 : 2,610.08 = 1,145.61 : x
  2. Step 2: Convert to fraction form
    1,891.67/2,610.08 = 1,145.61/x
  3. Step 3: Cross multiply
    1,891.67x = 2,610.08 × 1,145.61
  4. Step 4: Simplify right side
    1,891.67x = 2,990,142.10
  5. Step 5: Solve for x
    x = 2,990,142.10/1,891.67
  6. Step 6: Final answer
    x = 1,580.69

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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.