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Finding the Fourth Proportional to 3,920.53, 5,878.44 and 1,840.99

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Solution

The fourth proportional to 3,920.53, 5,878.44 and 1,840.99 is: 2,760.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.53 : 5,878.44 = 1,840.99 : x
  2. Step 2: Convert to fraction form
    3,920.53/5,878.44 = 1,840.99/x
  3. Step 3: Cross multiply
    3,920.53x = 5,878.44 × 1,840.99
  4. Step 4: Simplify right side
    3,920.53x = 10,822,149.26
  5. Step 5: Solve for x
    x = 10,822,149.26/3,920.53
  6. Step 6: Final answer
    x = 2,760.38

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1.5x scale

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.