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Finding the Fourth Proportional to 1,983.08, 2,978 and 1,653.68

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Solution

The fourth proportional to 1,983.08, 2,978 and 1,653.68 is: 2,483.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.08 : 2,978 = 1,653.68 : x
  2. Step 2: Convert to fraction form
    1,983.08/2,978 = 1,653.68/x
  3. Step 3: Cross multiply
    1,983.08x = 2,978 × 1,653.68
  4. Step 4: Simplify right side
    1,983.08x = 4,924,659.04
  5. Step 5: Solve for x
    x = 4,924,659.04/1,983.08
  6. Step 6: Final answer
    x = 2,483.34

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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.