Home / 7,122.21-10,684.53-3,174.90

Finding the Fourth Proportional to 7,122.21, 10,684.53 and 3,174.90

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Solution

The fourth proportional to 7,122.21, 10,684.53 and 3,174.90 is: 4,762.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.21 : 10,684.53 = 3,174.90 : x
  2. Step 2: Convert to fraction form
    7,122.21/10,684.53 = 3,174.90/x
  3. Step 3: Cross multiply
    7,122.21x = 10,684.53 × 3,174.90
  4. Step 4: Simplify right side
    7,122.21x = 33,922,314.30
  5. Step 5: Solve for x
    x = 33,922,314.30/7,122.21
  6. Step 6: Final answer
    x = 4,762.89

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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.