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Finding the Fourth Proportional to 2,976.39, 4,464.45 and 785.07

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Solution

The fourth proportional to 2,976.39, 4,464.45 and 785.07 is: 1,177.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,976.39 : 4,464.45 = 785.07 : x
  2. Step 2: Convert to fraction form
    2,976.39/4,464.45 = 785.07/x
  3. Step 3: Cross multiply
    2,976.39x = 4,464.45 × 785.07
  4. Step 4: Simplify right side
    2,976.39x = 3,504,905.76
  5. Step 5: Solve for x
    x = 3,504,905.76/2,976.39
  6. Step 6: Final answer
    x = 1,177.57

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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.