Home / 6,405.48-9,610.78-3,480.36

Finding the Fourth Proportional to 6,405.48, 9,610.78 and 3,480.36

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Solution

The fourth proportional to 6,405.48, 9,610.78 and 3,480.36 is: 5,221.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405.48 : 9,610.78 = 3,480.36 : x
  2. Step 2: Convert to fraction form
    6,405.48/9,610.78 = 3,480.36/x
  3. Step 3: Cross multiply
    6,405.48x = 9,610.78 × 3,480.36
  4. Step 4: Simplify right side
    6,405.48x = 33,448,974.28
  5. Step 5: Solve for x
    x = 33,448,974.28/6,405.48
  6. Step 6: Final answer
    x = 5,221.93

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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.