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Finding the Fourth Proportional to 2,874.48, 4,286.57 and 2,848.21

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Solution

The fourth proportional to 2,874.48, 4,286.57 and 2,848.21 is: 4,247.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,874.48 : 4,286.57 = 2,848.21 : x
  2. Step 2: Convert to fraction form
    2,874.48/4,286.57 = 2,848.21/x
  3. Step 3: Cross multiply
    2,874.48x = 4,286.57 × 2,848.21
  4. Step 4: Simplify right side
    2,874.48x = 12,209,015.87
  5. Step 5: Solve for x
    x = 12,209,015.87/2,874.48
  6. Step 6: Final answer
    x = 4,247.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.