Home / 3,136.86-4,328.71-1,878.60

Finding the Fourth Proportional to 3,136.86, 4,328.71 and 1,878.60

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Solution

The fourth proportional to 3,136.86, 4,328.71 and 1,878.60 is: 2,592.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.86 : 4,328.71 = 1,878.60 : x
  2. Step 2: Convert to fraction form
    3,136.86/4,328.71 = 1,878.60/x
  3. Step 3: Cross multiply
    3,136.86x = 4,328.71 × 1,878.60
  4. Step 4: Simplify right side
    3,136.86x = 8,131,926.14
  5. Step 5: Solve for x
    x = 8,131,926.14/3,136.86
  6. Step 6: Final answer
    x = 2,592.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.