Home / 1,983.30-2,972.85-1,438.03

Finding the Fourth Proportional to 1,983.30, 2,972.85 and 1,438.03

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Solution

The fourth proportional to 1,983.30, 2,972.85 and 1,438.03 is: 2,155.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.30 : 2,972.85 = 1,438.03 : x
  2. Step 2: Convert to fraction form
    1,983.30/2,972.85 = 1,438.03/x
  3. Step 3: Cross multiply
    1,983.30x = 2,972.85 × 1,438.03
  4. Step 4: Simplify right side
    1,983.30x = 4,275,047.49
  5. Step 5: Solve for x
    x = 4,275,047.49/1,983.30
  6. Step 6: Final answer
    x = 2,155.52

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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.