Home / 2,905.42-4,009.55-1,579.20

Finding the Fourth Proportional to 2,905.42, 4,009.55 and 1,579.20

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Solution

The fourth proportional to 2,905.42, 4,009.55 and 1,579.20 is: 2,179.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.42 : 4,009.55 = 1,579.20 : x
  2. Step 2: Convert to fraction form
    2,905.42/4,009.55 = 1,579.20/x
  3. Step 3: Cross multiply
    2,905.42x = 4,009.55 × 1,579.20
  4. Step 4: Simplify right side
    2,905.42x = 6,331,867.31
  5. Step 5: Solve for x
    x = 6,331,867.31/2,905.42
  6. Step 6: Final answer
    x = 2,179.33

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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.