Home / 1,519.71-2,090.94-1,187.57

Finding the Fourth Proportional to 1,519.71, 2,090.94 and 1,187.57

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Solution

The fourth proportional to 1,519.71, 2,090.94 and 1,187.57 is: 1,633.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.71 : 2,090.94 = 1,187.57 : x
  2. Step 2: Convert to fraction form
    1,519.71/2,090.94 = 1,187.57/x
  3. Step 3: Cross multiply
    1,519.71x = 2,090.94 × 1,187.57
  4. Step 4: Simplify right side
    1,519.71x = 2,483,127.16
  5. Step 5: Solve for x
    x = 2,483,127.16/1,519.71
  6. Step 6: Final answer
    x = 1,633.95

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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.