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Finding the Fourth Proportional to 3,809.60, 5,259.84 and 2,923.84

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Solution

The fourth proportional to 3,809.60, 5,259.84 and 2,923.84 is: 4,036.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,809.60 : 5,259.84 = 2,923.84 : x
  2. Step 2: Convert to fraction form
    3,809.60/5,259.84 = 2,923.84/x
  3. Step 3: Cross multiply
    3,809.60x = 5,259.84 × 2,923.84
  4. Step 4: Simplify right side
    3,809.60x = 15,378,930.59
  5. Step 5: Solve for x
    x = 15,378,930.59/3,809.60
  6. Step 6: Final answer
    x = 4,036.89

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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.