Home / 6,420.45-9,630.64-2,038.25

Finding the Fourth Proportional to 6,420.45, 9,630.64 and 2,038.25

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Solution

The fourth proportional to 6,420.45, 9,630.64 and 2,038.25 is: 3,057.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.45 : 9,630.64 = 2,038.25 : x
  2. Step 2: Convert to fraction form
    6,420.45/9,630.64 = 2,038.25/x
  3. Step 3: Cross multiply
    6,420.45x = 9,630.64 × 2,038.25
  4. Step 4: Simplify right side
    6,420.45x = 19,629,651.98
  5. Step 5: Solve for x
    x = 19,629,651.98/6,420.45
  6. Step 6: Final answer
    x = 3,057.36

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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.