Home / 4,170.40-6,255.60-2,615.20

Finding the Fourth Proportional to 4,170.40, 6,255.60 and 2,615.20

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Solution

The fourth proportional to 4,170.40, 6,255.60 and 2,615.20 is: 3,922.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,170.40 : 6,255.60 = 2,615.20 : x
  2. Step 2: Convert to fraction form
    4,170.40/6,255.60 = 2,615.20/x
  3. Step 3: Cross multiply
    4,170.40x = 6,255.60 × 2,615.20
  4. Step 4: Simplify right side
    4,170.40x = 16,359,645.12
  5. Step 5: Solve for x
    x = 16,359,645.12/4,170.40
  6. Step 6: Final answer
    x = 3,922.80

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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.