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Finding the Fourth Proportional to 1,680.53, 2,320.22 and 1,575.96

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Solution

The fourth proportional to 1,680.53, 2,320.22 and 1,575.96 is: 2,175.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.53 : 2,320.22 = 1,575.96 : x
  2. Step 2: Convert to fraction form
    1,680.53/2,320.22 = 1,575.96/x
  3. Step 3: Cross multiply
    1,680.53x = 2,320.22 × 1,575.96
  4. Step 4: Simplify right side
    1,680.53x = 3,656,566.03
  5. Step 5: Solve for x
    x = 3,656,566.03/1,680.53
  6. Step 6: Final answer
    x = 2,175.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.