Home / 6,420.45-9,629.82-2,038.35

Finding the Fourth Proportional to 6,420.45, 9,629.82 and 2,038.35

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Solution

The fourth proportional to 6,420.45, 9,629.82 and 2,038.35 is: 3,057.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.45 : 9,629.82 = 2,038.35 : x
  2. Step 2: Convert to fraction form
    6,420.45/9,629.82 = 2,038.35/x
  3. Step 3: Cross multiply
    6,420.45x = 9,629.82 × 2,038.35
  4. Step 4: Simplify right side
    6,420.45x = 19,628,943.60
  5. Step 5: Solve for x
    x = 19,628,943.60/6,420.45
  6. Step 6: Final answer
    x = 3,057.25

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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.