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Finding the Fourth Proportional to 6,556.78, 9,834.90 and 1,626.31

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Solution

The fourth proportional to 6,556.78, 9,834.90 and 1,626.31 is: 2,439.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,556.78 : 9,834.90 = 1,626.31 : x
  2. Step 2: Convert to fraction form
    6,556.78/9,834.90 = 1,626.31/x
  3. Step 3: Cross multiply
    6,556.78x = 9,834.90 × 1,626.31
  4. Step 4: Simplify right side
    6,556.78x = 15,994,596.22
  5. Step 5: Solve for x
    x = 15,994,596.22/6,556.78
  6. Step 6: Final answer
    x = 2,439.40

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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.