Home / 6,921.90-10,386.63-3,225.87

Finding the Fourth Proportional to 6,921.90, 10,386.63 and 3,225.87

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Solution

The fourth proportional to 6,921.90, 10,386.63 and 3,225.87 is: 4,840.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.90 : 10,386.63 = 3,225.87 : x
  2. Step 2: Convert to fraction form
    6,921.90/10,386.63 = 3,225.87/x
  3. Step 3: Cross multiply
    6,921.90x = 10,386.63 × 3,225.87
  4. Step 4: Simplify right side
    6,921.90x = 33,505,918.12
  5. Step 5: Solve for x
    x = 33,505,918.12/6,921.90
  6. Step 6: Final answer
    x = 4,840.57

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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.