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Finding the Fourth Proportional to 2,868.40, 4,351.22 and 2,868.40

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Solution

The fourth proportional to 2,868.40, 4,351.22 and 2,868.40 is: 4,351.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,868.40 : 4,351.22 = 2,868.40 : x
  2. Step 2: Convert to fraction form
    2,868.40/4,351.22 = 2,868.40/x
  3. Step 3: Cross multiply
    2,868.40x = 4,351.22 × 2,868.40
  4. Step 4: Simplify right side
    2,868.40x = 12,481,039.45
  5. Step 5: Solve for x
    x = 12,481,039.45/2,868.40
  6. Step 6: Final answer
    x = 4,351.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.