Home / 3,136.86-4,706.50-1,905.16

Finding the Fourth Proportional to 3,136.86, 4,706.50 and 1,905.16

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Solution

The fourth proportional to 3,136.86, 4,706.50 and 1,905.16 is: 2,858.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.86 : 4,706.50 = 1,905.16 : x
  2. Step 2: Convert to fraction form
    3,136.86/4,706.50 = 1,905.16/x
  3. Step 3: Cross multiply
    3,136.86x = 4,706.50 × 1,905.16
  4. Step 4: Simplify right side
    3,136.86x = 8,966,635.54
  5. Step 5: Solve for x
    x = 8,966,635.54/3,136.86
  6. Step 6: Final answer
    x = 2,858.47

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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.