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Finding the Fourth Proportional to 1,293.03, 1,784.61 and 850.86

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Solution

The fourth proportional to 1,293.03, 1,784.61 and 850.86 is: 1,174.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293.03 : 1,784.61 = 850.86 : x
  2. Step 2: Convert to fraction form
    1,293.03/1,784.61 = 850.86/x
  3. Step 3: Cross multiply
    1,293.03x = 1,784.61 × 850.86
  4. Step 4: Simplify right side
    1,293.03x = 1,518,453.26
  5. Step 5: Solve for x
    x = 1,518,453.26/1,293.03
  6. Step 6: Final answer
    x = 1,174.34

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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.