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Finding the Fourth Proportional to 2,835.20, 4,250.28 and 984.80

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Solution

The fourth proportional to 2,835.20, 4,250.28 and 984.80 is: 1,476.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,835.20 : 4,250.28 = 984.80 : x
  2. Step 2: Convert to fraction form
    2,835.20/4,250.28 = 984.80/x
  3. Step 3: Cross multiply
    2,835.20x = 4,250.28 × 984.80
  4. Step 4: Simplify right side
    2,835.20x = 4,185,675.74
  5. Step 5: Solve for x
    x = 4,185,675.74/2,835.20
  6. Step 6: Final answer
    x = 1,476.32

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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.