Home / 6,419.20-9,620.70-5,722.60

Finding the Fourth Proportional to 6,419.20, 9,620.70 and 5,722.60

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Solution

The fourth proportional to 6,419.20, 9,620.70 and 5,722.60 is: 8,576.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,419.20 : 9,620.70 = 5,722.60 : x
  2. Step 2: Convert to fraction form
    6,419.20/9,620.70 = 5,722.60/x
  3. Step 3: Cross multiply
    6,419.20x = 9,620.70 × 5,722.60
  4. Step 4: Simplify right side
    6,419.20x = 55,055,417.82
  5. Step 5: Solve for x
    x = 55,055,417.82/6,419.20
  6. Step 6: Final answer
    x = 8,576.68

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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.