Home / 2,945.09-4,064.20-1,618.78

Finding the Fourth Proportional to 2,945.09, 4,064.20 and 1,618.78

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Solution

The fourth proportional to 2,945.09, 4,064.20 and 1,618.78 is: 2,233.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,945.09 : 4,064.20 = 1,618.78 : x
  2. Step 2: Convert to fraction form
    2,945.09/4,064.20 = 1,618.78/x
  3. Step 3: Cross multiply
    2,945.09x = 4,064.20 × 1,618.78
  4. Step 4: Simplify right side
    2,945.09x = 6,579,045.68
  5. Step 5: Solve for x
    x = 6,579,045.68/2,945.09
  6. Step 6: Final answer
    x = 2,233.90

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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.