Home / 2,217.42-3,329.85-2,129.13

Finding the Fourth Proportional to 2,217.42, 3,329.85 and 2,129.13

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Solution

The fourth proportional to 2,217.42, 3,329.85 and 2,129.13 is: 3,197.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.42 : 3,329.85 = 2,129.13 : x
  2. Step 2: Convert to fraction form
    2,217.42/3,329.85 = 2,129.13/x
  3. Step 3: Cross multiply
    2,217.42x = 3,329.85 × 2,129.13
  4. Step 4: Simplify right side
    2,217.42x = 7,089,683.53
  5. Step 5: Solve for x
    x = 7,089,683.53/2,217.42
  6. Step 6: Final answer
    x = 3,197.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.