Home / 3,136.35-4,328.21-1,720.17

Finding the Fourth Proportional to 3,136.35, 4,328.21 and 1,720.17

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Solution

The fourth proportional to 3,136.35, 4,328.21 and 1,720.17 is: 2,373.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.35 : 4,328.21 = 1,720.17 : x
  2. Step 2: Convert to fraction form
    3,136.35/4,328.21 = 1,720.17/x
  3. Step 3: Cross multiply
    3,136.35x = 4,328.21 × 1,720.17
  4. Step 4: Simplify right side
    3,136.35x = 7,445,274.72
  5. Step 5: Solve for x
    x = 7,445,274.72/3,136.35
  6. Step 6: Final answer
    x = 2,373.86

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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.