Home / 1,897.90-2,618.66-1,151.71

Finding the Fourth Proportional to 1,897.90, 2,618.66 and 1,151.71

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Solution

The fourth proportional to 1,897.90, 2,618.66 and 1,151.71 is: 1,589.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,897.90 : 2,618.66 = 1,151.71 : x
  2. Step 2: Convert to fraction form
    1,897.90/2,618.66 = 1,151.71/x
  3. Step 3: Cross multiply
    1,897.90x = 2,618.66 × 1,151.71
  4. Step 4: Simplify right side
    1,897.90x = 3,015,936.91
  5. Step 5: Solve for x
    x = 3,015,936.91/1,897.90
  6. Step 6: Final answer
    x = 1,589.09

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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.