Home / 9,628.89-13,286.25-5,379.80

Finding the Fourth Proportional to 9,628.89, 13,286.25 and 5,379.80

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Solution

The fourth proportional to 9,628.89, 13,286.25 and 5,379.80 is: 7,423.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,628.89 : 13,286.25 = 5,379.80 : x
  2. Step 2: Convert to fraction form
    9,628.89/13,286.25 = 5,379.80/x
  3. Step 3: Cross multiply
    9,628.89x = 13,286.25 × 5,379.80
  4. Step 4: Simplify right side
    9,628.89x = 71,477,316.45
  5. Step 5: Solve for x
    x = 71,477,316.45/9,628.89
  6. Step 6: Final answer
    x = 7,423.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.