Home / 4,774.50-7,161.78-1,311.78

Finding the Fourth Proportional to 4,774.50, 7,161.78 and 1,311.78

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Solution

The fourth proportional to 4,774.50, 7,161.78 and 1,311.78 is: 1,967.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,774.50 : 7,161.78 = 1,311.78 : x
  2. Step 2: Convert to fraction form
    4,774.50/7,161.78 = 1,311.78/x
  3. Step 3: Cross multiply
    4,774.50x = 7,161.78 × 1,311.78
  4. Step 4: Simplify right side
    4,774.50x = 9,394,679.77
  5. Step 5: Solve for x
    x = 9,394,679.77/4,774.50
  6. Step 6: Final answer
    x = 1,967.68

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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.