Home / 6,331.20-9,507.60-3,415.20

Finding the Fourth Proportional to 6,331.20, 9,507.60 and 3,415.20

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Solution

The fourth proportional to 6,331.20, 9,507.60 and 3,415.20 is: 5,128.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,331.20 : 9,507.60 = 3,415.20 : x
  2. Step 2: Convert to fraction form
    6,331.20/9,507.60 = 3,415.20/x
  3. Step 3: Cross multiply
    6,331.20x = 9,507.60 × 3,415.20
  4. Step 4: Simplify right side
    6,331.20x = 32,470,355.52
  5. Step 5: Solve for x
    x = 32,470,355.52/6,331.20
  6. Step 6: Final answer
    x = 5,128.63

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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.