Home / 6,415.20-9,605.36-3,330.72

Finding the Fourth Proportional to 6,415.20, 9,605.36 and 3,330.72

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Solution

The fourth proportional to 6,415.20, 9,605.36 and 3,330.72 is: 4,987.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,415.20 : 9,605.36 = 3,330.72 : x
  2. Step 2: Convert to fraction form
    6,415.20/9,605.36 = 3,330.72/x
  3. Step 3: Cross multiply
    6,415.20x = 9,605.36 × 3,330.72
  4. Step 4: Simplify right side
    6,415.20x = 31,992,764.66
  5. Step 5: Solve for x
    x = 31,992,764.66/6,415.20
  6. Step 6: Final answer
    x = 4,987.03

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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.