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Finding the Fourth Proportional to 2,647.86, 3,971.81 and 894.84

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Solution

The fourth proportional to 2,647.86, 3,971.81 and 894.84 is: 1,342.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,647.86 : 3,971.81 = 894.84 : x
  2. Step 2: Convert to fraction form
    2,647.86/3,971.81 = 894.84/x
  3. Step 3: Cross multiply
    2,647.86x = 3,971.81 × 894.84
  4. Step 4: Simplify right side
    2,647.86x = 3,554,129.99
  5. Step 5: Solve for x
    x = 3,554,129.99/2,647.86
  6. Step 6: Final answer
    x = 1,342.27

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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.