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Finding the Fourth Proportional to 2,365.79, 3,548.69 and 905.09

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Solution

The fourth proportional to 2,365.79, 3,548.69 and 905.09 is: 1,357.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,365.79 : 3,548.69 = 905.09 : x
  2. Step 2: Convert to fraction form
    2,365.79/3,548.69 = 905.09/x
  3. Step 3: Cross multiply
    2,365.79x = 3,548.69 × 905.09
  4. Step 4: Simplify right side
    2,365.79x = 3,211,883.83
  5. Step 5: Solve for x
    x = 3,211,883.83/2,365.79
  6. Step 6: Final answer
    x = 1,357.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.