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Finding the Fourth Proportional to 3,880.76, 5,820.52 and 1,068.94

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Solution

The fourth proportional to 3,880.76, 5,820.52 and 1,068.94 is: 1,603.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.76 : 5,820.52 = 1,068.94 : x
  2. Step 2: Convert to fraction form
    3,880.76/5,820.52 = 1,068.94/x
  3. Step 3: Cross multiply
    3,880.76x = 5,820.52 × 1,068.94
  4. Step 4: Simplify right side
    3,880.76x = 6,221,786.65
  5. Step 5: Solve for x
    x = 6,221,786.65/3,880.76
  6. Step 6: Final answer
    x = 1,603.24

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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.