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Finding the Fourth Proportional to 3,048.57, 4,572.36 and 857.34

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Solution

The fourth proportional to 3,048.57, 4,572.36 and 857.34 is: 1,285.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,048.57 : 4,572.36 = 857.34 : x
  2. Step 2: Convert to fraction form
    3,048.57/4,572.36 = 857.34/x
  3. Step 3: Cross multiply
    3,048.57x = 4,572.36 × 857.34
  4. Step 4: Simplify right side
    3,048.57x = 3,920,067.12
  5. Step 5: Solve for x
    x = 3,920,067.12/3,048.57
  6. Step 6: Final answer
    x = 1,285.87

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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.