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Finding the Fourth Proportional to 3,188.48, 4,783.20 and 1,136

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Solution

The fourth proportional to 3,188.48, 4,783.20 and 1,136 is: 1,704.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.48 : 4,783.20 = 1,136 : x
  2. Step 2: Convert to fraction form
    3,188.48/4,783.20 = 1,136/x
  3. Step 3: Cross multiply
    3,188.48x = 4,783.20 × 1,136
  4. Step 4: Simplify right side
    3,188.48x = 5,433,715.20
  5. Step 5: Solve for x
    x = 5,433,715.20/3,188.48
  6. Step 6: Final answer
    x = 1,704.17

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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.