Home / 3,880.29-5,820.53-1,107.21

Finding the Fourth Proportional to 3,880.29, 5,820.53 and 1,107.21

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Solution

The fourth proportional to 3,880.29, 5,820.53 and 1,107.21 is: 1,660.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.29 : 5,820.53 = 1,107.21 : x
  2. Step 2: Convert to fraction form
    3,880.29/5,820.53 = 1,107.21/x
  3. Step 3: Cross multiply
    3,880.29x = 5,820.53 × 1,107.21
  4. Step 4: Simplify right side
    3,880.29x = 6,444,543.49
  5. Step 5: Solve for x
    x = 6,444,543.49/3,880.29
  6. Step 6: Final answer
    x = 1,660.84

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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.