Home / 3,136.75-4,328.22-1,810.20

Finding the Fourth Proportional to 3,136.75, 4,328.22 and 1,810.20

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Solution

The fourth proportional to 3,136.75, 4,328.22 and 1,810.20 is: 2,497.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.75 : 4,328.22 = 1,810.20 : x
  2. Step 2: Convert to fraction form
    3,136.75/4,328.22 = 1,810.20/x
  3. Step 3: Cross multiply
    3,136.75x = 4,328.22 × 1,810.20
  4. Step 4: Simplify right side
    3,136.75x = 7,834,934.79
  5. Step 5: Solve for x
    x = 7,834,934.79/3,136.75
  6. Step 6: Final answer
    x = 2,497.79

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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.