Home / 6,420.08-9,629.35-1,739.79

Finding the Fourth Proportional to 6,420.08, 9,629.35 and 1,739.79

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Solution

The fourth proportional to 6,420.08, 9,629.35 and 1,739.79 is: 2,609.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.08 : 9,629.35 = 1,739.79 : x
  2. Step 2: Convert to fraction form
    6,420.08/9,629.35 = 1,739.79/x
  3. Step 3: Cross multiply
    6,420.08x = 9,629.35 × 1,739.79
  4. Step 4: Simplify right side
    6,420.08x = 16,753,046.84
  5. Step 5: Solve for x
    x = 16,753,046.84/6,420.08
  6. Step 6: Final answer
    x = 2,609.48

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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.