Home / 1,838.18-2,756.30-605.43

Finding the Fourth Proportional to 1,838.18, 2,756.30 and 605.43

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Solution

The fourth proportional to 1,838.18, 2,756.30 and 605.43 is: 907.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,838.18 : 2,756.30 = 605.43 : x
  2. Step 2: Convert to fraction form
    1,838.18/2,756.30 = 605.43/x
  3. Step 3: Cross multiply
    1,838.18x = 2,756.30 × 605.43
  4. Step 4: Simplify right side
    1,838.18x = 1,668,743.68
  5. Step 5: Solve for x
    x = 1,668,743.68/1,838.18
  6. Step 6: Final answer
    x = 907.82

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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.