Home / 1,619.42-2,428.76-741.66

Finding the Fourth Proportional to 1,619.42, 2,428.76 and 741.66

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Solution

The fourth proportional to 1,619.42, 2,428.76 and 741.66 is: 1,112.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.42 : 2,428.76 = 741.66 : x
  2. Step 2: Convert to fraction form
    1,619.42/2,428.76 = 741.66/x
  3. Step 3: Cross multiply
    1,619.42x = 2,428.76 × 741.66
  4. Step 4: Simplify right side
    1,619.42x = 1,801,314.14
  5. Step 5: Solve for x
    x = 1,801,314.14/1,619.42
  6. Step 6: Final answer
    x = 1,112.32

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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.