Home / 3,318.56-4,579.56-1,921.28

Finding the Fourth Proportional to 3,318.56, 4,579.56 and 1,921.28

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Solution

The fourth proportional to 3,318.56, 4,579.56 and 1,921.28 is: 2,651.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.56 : 4,579.56 = 1,921.28 : x
  2. Step 2: Convert to fraction form
    3,318.56/4,579.56 = 1,921.28/x
  3. Step 3: Cross multiply
    3,318.56x = 4,579.56 × 1,921.28
  4. Step 4: Simplify right side
    3,318.56x = 8,798,617.04
  5. Step 5: Solve for x
    x = 8,798,617.04/3,318.56
  6. Step 6: Final answer
    x = 2,651.34

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Double scale
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Similar ratio
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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.