Home / 3,136.75-4,328.53-1,720.18

Finding the Fourth Proportional to 3,136.75, 4,328.53 and 1,720.18

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Solution

The fourth proportional to 3,136.75, 4,328.53 and 1,720.18 is: 2,373.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.75 : 4,328.53 = 1,720.18 : x
  2. Step 2: Convert to fraction form
    3,136.75/4,328.53 = 1,720.18/x
  3. Step 3: Cross multiply
    3,136.75x = 4,328.53 × 1,720.18
  4. Step 4: Simplify right side
    3,136.75x = 7,445,850.74
  5. Step 5: Solve for x
    x = 7,445,850.74/3,136.75
  6. Step 6: Final answer
    x = 2,373.75

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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.