Home / 3,945.54-5,445.24-2,949.12

Finding the Fourth Proportional to 3,945.54, 5,445.24 and 2,949.12

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Solution

The fourth proportional to 3,945.54, 5,445.24 and 2,949.12 is: 4,070.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.54 : 5,445.24 = 2,949.12 : x
  2. Step 2: Convert to fraction form
    3,945.54/5,445.24 = 2,949.12/x
  3. Step 3: Cross multiply
    3,945.54x = 5,445.24 × 2,949.12
  4. Step 4: Simplify right side
    3,945.54x = 16,058,666.19
  5. Step 5: Solve for x
    x = 16,058,666.19/3,945.54
  6. Step 6: Final answer
    x = 4,070.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.