Home / 1,983.90-2,972.58-1,908.02

Finding the Fourth Proportional to 1,983.90, 2,972.58 and 1,908.02

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Solution

The fourth proportional to 1,983.90, 2,972.58 and 1,908.02 is: 2,858.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.90 : 2,972.58 = 1,908.02 : x
  2. Step 2: Convert to fraction form
    1,983.90/2,972.58 = 1,908.02/x
  3. Step 3: Cross multiply
    1,983.90x = 2,972.58 × 1,908.02
  4. Step 4: Simplify right side
    1,983.90x = 5,671,742.09
  5. Step 5: Solve for x
    x = 5,671,742.09/1,983.90
  6. Step 6: Final answer
    x = 2,858.89

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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.