Home / 3,136.68-4,328.60-1,720.43

Finding the Fourth Proportional to 3,136.68, 4,328.60 and 1,720.43

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Solution

The fourth proportional to 3,136.68, 4,328.60 and 1,720.43 is: 2,374.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.68 : 4,328.60 = 1,720.43 : x
  2. Step 2: Convert to fraction form
    3,136.68/4,328.60 = 1,720.43/x
  3. Step 3: Cross multiply
    3,136.68x = 4,328.60 × 1,720.43
  4. Step 4: Simplify right side
    3,136.68x = 7,447,053.30
  5. Step 5: Solve for x
    x = 7,447,053.30/3,136.68
  6. Step 6: Final answer
    x = 2,374.18

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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.