Home / 2,615.06-3,922.60-667.20

Finding the Fourth Proportional to 2,615.06, 3,922.60 and 667.20

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Solution

The fourth proportional to 2,615.06, 3,922.60 and 667.20 is: 1,000.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.06 : 3,922.60 = 667.20 : x
  2. Step 2: Convert to fraction form
    2,615.06/3,922.60 = 667.20/x
  3. Step 3: Cross multiply
    2,615.06x = 3,922.60 × 667.20
  4. Step 4: Simplify right side
    2,615.06x = 2,617,158.72
  5. Step 5: Solve for x
    x = 2,617,158.72/2,615.06
  6. Step 6: Final answer
    x = 1,000.80

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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.