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Finding the Fourth Proportional to 1,983.90, 2,976.20 and 888.22

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Solution

The fourth proportional to 1,983.90, 2,976.20 and 888.22 is: 1,332.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.90 : 2,976.20 = 888.22 : x
  2. Step 2: Convert to fraction form
    1,983.90/2,976.20 = 888.22/x
  3. Step 3: Cross multiply
    1,983.90x = 2,976.20 × 888.22
  4. Step 4: Simplify right side
    1,983.90x = 2,643,520.36
  5. Step 5: Solve for x
    x = 2,643,520.36/1,983.90
  6. Step 6: Final answer
    x = 1,332.49

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1.5x scale

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.