Home / 1,821.14-2,496.78-1,788.32

Finding the Fourth Proportional to 1,821.14, 2,496.78 and 1,788.32

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Solution

The fourth proportional to 1,821.14, 2,496.78 and 1,788.32 is: 2,451.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.14 : 2,496.78 = 1,788.32 : x
  2. Step 2: Convert to fraction form
    1,821.14/2,496.78 = 1,788.32/x
  3. Step 3: Cross multiply
    1,821.14x = 2,496.78 × 1,788.32
  4. Step 4: Simplify right side
    1,821.14x = 4,465,041.61
  5. Step 5: Solve for x
    x = 4,465,041.61/1,821.14
  6. Step 6: Final answer
    x = 2,451.78

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.