Home / 1,419.09-2,127.05-1,071.29

Finding the Fourth Proportional to 1,419.09, 2,127.05 and 1,071.29

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Solution

The fourth proportional to 1,419.09, 2,127.05 and 1,071.29 is: 1,605.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419.09 : 2,127.05 = 1,071.29 : x
  2. Step 2: Convert to fraction form
    1,419.09/2,127.05 = 1,071.29/x
  3. Step 3: Cross multiply
    1,419.09x = 2,127.05 × 1,071.29
  4. Step 4: Simplify right side
    1,419.09x = 2,278,687.39
  5. Step 5: Solve for x
    x = 2,278,687.39/1,419.09
  6. Step 6: Final answer
    x = 1,605.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.