Home / 9,321.62-13,986.08-3,478.69

Finding the Fourth Proportional to 9,321.62, 13,986.08 and 3,478.69

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Solution

The fourth proportional to 9,321.62, 13,986.08 and 3,478.69 is: 5,219.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,321.62 : 13,986.08 = 3,478.69 : x
  2. Step 2: Convert to fraction form
    9,321.62/13,986.08 = 3,478.69/x
  3. Step 3: Cross multiply
    9,321.62x = 13,986.08 × 3,478.69
  4. Step 4: Simplify right side
    9,321.62x = 48,653,197.32
  5. Step 5: Solve for x
    x = 48,653,197.32/9,321.62
  6. Step 6: Final answer
    x = 5,219.39

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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.