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Finding the Fourth Proportional to 2,853.72, 4,277.34 and 2,788.92

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Solution

The fourth proportional to 2,853.72, 4,277.34 and 2,788.92 is: 4,180.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,853.72 : 4,277.34 = 2,788.92 : x
  2. Step 2: Convert to fraction form
    2,853.72/4,277.34 = 2,788.92/x
  3. Step 3: Cross multiply
    2,853.72x = 4,277.34 × 2,788.92
  4. Step 4: Simplify right side
    2,853.72x = 11,929,159.07
  5. Step 5: Solve for x
    x = 11,929,159.07/2,853.72
  6. Step 6: Final answer
    x = 4,180.21

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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.