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Finding the Fourth Proportional to 2,842.16, 3,920.84 and 1,662.50

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Solution

The fourth proportional to 2,842.16, 3,920.84 and 1,662.50 is: 2,293.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,842.16 : 3,920.84 = 1,662.50 : x
  2. Step 2: Convert to fraction form
    2,842.16/3,920.84 = 1,662.50/x
  3. Step 3: Cross multiply
    2,842.16x = 3,920.84 × 1,662.50
  4. Step 4: Simplify right side
    2,842.16x = 6,518,396.50
  5. Step 5: Solve for x
    x = 6,518,396.50/2,842.16
  6. Step 6: Final answer
    x = 2,293.47

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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.