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Finding the Fourth Proportional to 3,039.54, 4,558.79 and 847.75

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Solution

The fourth proportional to 3,039.54, 4,558.79 and 847.75 is: 1,271.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,039.54 : 4,558.79 = 847.75 : x
  2. Step 2: Convert to fraction form
    3,039.54/4,558.79 = 847.75/x
  3. Step 3: Cross multiply
    3,039.54x = 4,558.79 × 847.75
  4. Step 4: Simplify right side
    3,039.54x = 3,864,714.22
  5. Step 5: Solve for x
    x = 3,864,714.22/3,039.54
  6. Step 6: Final answer
    x = 1,271.48

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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.