Home / 3,305.78-4,561.64-1,979.45

Finding the Fourth Proportional to 3,305.78, 4,561.64 and 1,979.45

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Solution

The fourth proportional to 3,305.78, 4,561.64 and 1,979.45 is: 2,731.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,305.78 : 4,561.64 = 1,979.45 : x
  2. Step 2: Convert to fraction form
    3,305.78/4,561.64 = 1,979.45/x
  3. Step 3: Cross multiply
    3,305.78x = 4,561.64 × 1,979.45
  4. Step 4: Simplify right side
    3,305.78x = 9,029,528.40
  5. Step 5: Solve for x
    x = 9,029,528.40/3,305.78
  6. Step 6: Final answer
    x = 2,731.44

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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.