Home / 6,945.45-10,420.61-2,015.39

Finding the Fourth Proportional to 6,945.45, 10,420.61 and 2,015.39

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Solution

The fourth proportional to 6,945.45, 10,420.61 and 2,015.39 is: 3,023.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,945.45 : 10,420.61 = 2,015.39 : x
  2. Step 2: Convert to fraction form
    6,945.45/10,420.61 = 2,015.39/x
  3. Step 3: Cross multiply
    6,945.45x = 10,420.61 × 2,015.39
  4. Step 4: Simplify right side
    6,945.45x = 21,001,531.01
  5. Step 5: Solve for x
    x = 21,001,531.01/6,945.45
  6. Step 6: Final answer
    x = 3,023.78

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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.