Home / 6,428.11-9,643.37-2,918.36

Finding the Fourth Proportional to 6,428.11, 9,643.37 and 2,918.36

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Solution

The fourth proportional to 6,428.11, 9,643.37 and 2,918.36 is: 4,378.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.11 : 9,643.37 = 2,918.36 : x
  2. Step 2: Convert to fraction form
    6,428.11/9,643.37 = 2,918.36/x
  3. Step 3: Cross multiply
    6,428.11x = 9,643.37 × 2,918.36
  4. Step 4: Simplify right side
    6,428.11x = 28,142,810.68
  5. Step 5: Solve for x
    x = 28,142,810.68/6,428.11
  6. Step 6: Final answer
    x = 4,378.09

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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.