Home / 1,815.51-2,499.75-1,520.13

Finding the Fourth Proportional to 1,815.51, 2,499.75 and 1,520.13

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Solution

The fourth proportional to 1,815.51, 2,499.75 and 1,520.13 is: 2,093.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.51 : 2,499.75 = 1,520.13 : x
  2. Step 2: Convert to fraction form
    1,815.51/2,499.75 = 1,520.13/x
  3. Step 3: Cross multiply
    1,815.51x = 2,499.75 × 1,520.13
  4. Step 4: Simplify right side
    1,815.51x = 3,799,944.97
  5. Step 5: Solve for x
    x = 3,799,944.97/1,815.51
  6. Step 6: Final answer
    x = 2,093.05

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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.