Home / 2,428.79-3,640.75-1,698.17

Finding the Fourth Proportional to 2,428.79, 3,640.75 and 1,698.17

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Solution

The fourth proportional to 2,428.79, 3,640.75 and 1,698.17 is: 2,545.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,428.79 : 3,640.75 = 1,698.17 : x
  2. Step 2: Convert to fraction form
    2,428.79/3,640.75 = 1,698.17/x
  3. Step 3: Cross multiply
    2,428.79x = 3,640.75 × 1,698.17
  4. Step 4: Simplify right side
    2,428.79x = 6,182,589.98
  5. Step 5: Solve for x
    x = 6,182,589.98/2,428.79
  6. Step 6: Final answer
    x = 2,545.55

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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.