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Finding the Fourth Proportional to 2,283.06, 3,424.20 and 639.24

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Solution

The fourth proportional to 2,283.06, 3,424.20 and 639.24 is: 958.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,283.06 : 3,424.20 = 639.24 : x
  2. Step 2: Convert to fraction form
    2,283.06/3,424.20 = 639.24/x
  3. Step 3: Cross multiply
    2,283.06x = 3,424.20 × 639.24
  4. Step 4: Simplify right side
    2,283.06x = 2,188,885.61
  5. Step 5: Solve for x
    x = 2,188,885.61/2,283.06
  6. Step 6: Final answer
    x = 958.75

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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.