Home / 1,821.01-2,514.77-1,557.49

Finding the Fourth Proportional to 1,821.01, 2,514.77 and 1,557.49

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Solution

The fourth proportional to 1,821.01, 2,514.77 and 1,557.49 is: 2,150.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.01 : 2,514.77 = 1,557.49 : x
  2. Step 2: Convert to fraction form
    1,821.01/2,514.77 = 1,557.49/x
  3. Step 3: Cross multiply
    1,821.01x = 2,514.77 × 1,557.49
  4. Step 4: Simplify right side
    1,821.01x = 3,916,729.13
  5. Step 5: Solve for x
    x = 3,916,729.13/1,821.01
  6. Step 6: Final answer
    x = 2,150.86

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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.