Home / 9,319.50-13,979.21-3,772.80

Finding the Fourth Proportional to 9,319.50, 13,979.21 and 3,772.80

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Solution

The fourth proportional to 9,319.50, 13,979.21 and 3,772.80 is: 5,659.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,319.50 : 13,979.21 = 3,772.80 : x
  2. Step 2: Convert to fraction form
    9,319.50/13,979.21 = 3,772.80/x
  3. Step 3: Cross multiply
    9,319.50x = 13,979.21 × 3,772.80
  4. Step 4: Simplify right side
    9,319.50x = 52,740,744.62
  5. Step 5: Solve for x
    x = 52,740,744.62/9,319.50
  6. Step 6: Final answer
    x = 5,659.18

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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.