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Finding the Fourth Proportional to 3,047.08, 4,570.62 and 855.82

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Solution

The fourth proportional to 3,047.08, 4,570.62 and 855.82 is: 1,283.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,047.08 : 4,570.62 = 855.82 : x
  2. Step 2: Convert to fraction form
    3,047.08/4,570.62 = 855.82/x
  3. Step 3: Cross multiply
    3,047.08x = 4,570.62 × 855.82
  4. Step 4: Simplify right side
    3,047.08x = 3,911,628.01
  5. Step 5: Solve for x
    x = 3,911,628.01/3,047.08
  6. Step 6: Final answer
    x = 1,283.73

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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.