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Finding the Fourth Proportional to 3,188.78, 4,783.17 and 2,955.50

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Solution

The fourth proportional to 3,188.78, 4,783.17 and 2,955.50 is: 4,433.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.78 : 4,783.17 = 2,955.50 : x
  2. Step 2: Convert to fraction form
    3,188.78/4,783.17 = 2,955.50/x
  3. Step 3: Cross multiply
    3,188.78x = 4,783.17 × 2,955.50
  4. Step 4: Simplify right side
    3,188.78x = 14,136,658.94
  5. Step 5: Solve for x
    x = 14,136,658.94/3,188.78
  6. Step 6: Final answer
    x = 4,433.25

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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.