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Finding the Fourth Proportional to 2,007.90, 3,008.10 and 1,680.93

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Solution

The fourth proportional to 2,007.90, 3,008.10 and 1,680.93 is: 2,518.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,007.90 : 3,008.10 = 1,680.93 : x
  2. Step 2: Convert to fraction form
    2,007.90/3,008.10 = 1,680.93/x
  3. Step 3: Cross multiply
    2,007.90x = 3,008.10 × 1,680.93
  4. Step 4: Simplify right side
    2,007.90x = 5,056,405.53
  5. Step 5: Solve for x
    x = 5,056,405.53/2,007.90
  6. Step 6: Final answer
    x = 2,518.26

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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.