Home / 3,390.81-5,088.82-1,517.28

Finding the Fourth Proportional to 3,390.81, 5,088.82 and 1,517.28

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Solution

The fourth proportional to 3,390.81, 5,088.82 and 1,517.28 is: 2,277.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.81 : 5,088.82 = 1,517.28 : x
  2. Step 2: Convert to fraction form
    3,390.81/5,088.82 = 1,517.28/x
  3. Step 3: Cross multiply
    3,390.81x = 5,088.82 × 1,517.28
  4. Step 4: Simplify right side
    3,390.81x = 7,721,161.02
  5. Step 5: Solve for x
    x = 7,721,161.02/3,390.81
  6. Step 6: Final answer
    x = 2,277.08

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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.