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Finding the Fourth Proportional to 6,758.50, 10,138.21 and 2,078.22

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Solution

The fourth proportional to 6,758.50, 10,138.21 and 2,078.22 is: 3,117.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,758.50 : 10,138.21 = 2,078.22 : x
  2. Step 2: Convert to fraction form
    6,758.50/10,138.21 = 2,078.22/x
  3. Step 3: Cross multiply
    6,758.50x = 10,138.21 × 2,078.22
  4. Step 4: Simplify right side
    6,758.50x = 21,069,430.79
  5. Step 5: Solve for x
    x = 21,069,430.79/6,758.50
  6. Step 6: Final answer
    x = 3,117.47

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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.