Home / 3,136.53-4,705.42-1,287.62

Finding the Fourth Proportional to 3,136.53, 4,705.42 and 1,287.62

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Solution

The fourth proportional to 3,136.53, 4,705.42 and 1,287.62 is: 1,931.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.53 : 4,705.42 = 1,287.62 : x
  2. Step 2: Convert to fraction form
    3,136.53/4,705.42 = 1,287.62/x
  3. Step 3: Cross multiply
    3,136.53x = 4,705.42 × 1,287.62
  4. Step 4: Simplify right side
    3,136.53x = 6,058,792.90
  5. Step 5: Solve for x
    x = 6,058,792.90/3,136.53
  6. Step 6: Final answer
    x = 1,931.69

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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.