Home / 1,928.46-2,660.43-1,142.07

Finding the Fourth Proportional to 1,928.46, 2,660.43 and 1,142.07

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Solution

The fourth proportional to 1,928.46, 2,660.43 and 1,142.07 is: 1,575.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.46 : 2,660.43 = 1,142.07 : x
  2. Step 2: Convert to fraction form
    1,928.46/2,660.43 = 1,142.07/x
  3. Step 3: Cross multiply
    1,928.46x = 2,660.43 × 1,142.07
  4. Step 4: Simplify right side
    1,928.46x = 3,038,397.29
  5. Step 5: Solve for x
    x = 3,038,397.29/1,928.46
  6. Step 6: Final answer
    x = 1,575.56

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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.