Home / 3,136.35-4,328.02-1,878.11

Finding the Fourth Proportional to 3,136.35, 4,328.02 and 1,878.11

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Solution

The fourth proportional to 3,136.35, 4,328.02 and 1,878.11 is: 2,591.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.35 : 4,328.02 = 1,878.11 : x
  2. Step 2: Convert to fraction form
    3,136.35/4,328.02 = 1,878.11/x
  3. Step 3: Cross multiply
    3,136.35x = 4,328.02 × 1,878.11
  4. Step 4: Simplify right side
    3,136.35x = 8,128,497.64
  5. Step 5: Solve for x
    x = 8,128,497.64/3,136.35
  6. Step 6: Final answer
    x = 2,591.71

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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.