Home / 6,428.36-9,640.10-3,505.08

Finding the Fourth Proportional to 6,428.36, 9,640.10 and 3,505.08

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Solution

The fourth proportional to 6,428.36, 9,640.10 and 3,505.08 is: 5,256.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.36 : 9,640.10 = 3,505.08 : x
  2. Step 2: Convert to fraction form
    6,428.36/9,640.10 = 3,505.08/x
  3. Step 3: Cross multiply
    6,428.36x = 9,640.10 × 3,505.08
  4. Step 4: Simplify right side
    6,428.36x = 33,789,321.71
  5. Step 5: Solve for x
    x = 33,789,321.71/6,428.36
  6. Step 6: Final answer
    x = 5,256.29

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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.