Home / 1,928.41-2,661.22-1,089.15

Finding the Fourth Proportional to 1,928.41, 2,661.22 and 1,089.15

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Solution

The fourth proportional to 1,928.41, 2,661.22 and 1,089.15 is: 1,503.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.41 : 2,661.22 = 1,089.15 : x
  2. Step 2: Convert to fraction form
    1,928.41/2,661.22 = 1,089.15/x
  3. Step 3: Cross multiply
    1,928.41x = 2,661.22 × 1,089.15
  4. Step 4: Simplify right side
    1,928.41x = 2,898,459.14
  5. Step 5: Solve for x
    x = 2,898,459.14/1,928.41
  6. Step 6: Final answer
    x = 1,503.03

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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.