Home / 3,136.20-4,328.94-1,878.20

Finding the Fourth Proportional to 3,136.20, 4,328.94 and 1,878.20

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Solution

The fourth proportional to 3,136.20, 4,328.94 and 1,878.20 is: 2,592.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.20 : 4,328.94 = 1,878.20 : x
  2. Step 2: Convert to fraction form
    3,136.20/4,328.94 = 1,878.20/x
  3. Step 3: Cross multiply
    3,136.20x = 4,328.94 × 1,878.20
  4. Step 4: Simplify right side
    3,136.20x = 8,130,615.11
  5. Step 5: Solve for x
    x = 8,130,615.11/3,136.20
  6. Step 6: Final answer
    x = 2,592.51

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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.