Home / 4,951.20-7,419.60-4,216.80

Finding the Fourth Proportional to 4,951.20, 7,419.60 and 4,216.80

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Solution

The fourth proportional to 4,951.20, 7,419.60 and 4,216.80 is: 6,319.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,951.20 : 7,419.60 = 4,216.80 : x
  2. Step 2: Convert to fraction form
    4,951.20/7,419.60 = 4,216.80/x
  3. Step 3: Cross multiply
    4,951.20x = 7,419.60 × 4,216.80
  4. Step 4: Simplify right side
    4,951.20x = 31,286,969.28
  5. Step 5: Solve for x
    x = 31,286,969.28/4,951.20
  6. Step 6: Final answer
    x = 6,319.07

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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.