Home / 6,438.07-9,647.79-3,147.45

Finding the Fourth Proportional to 6,438.07, 9,647.79 and 3,147.45

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Solution

The fourth proportional to 6,438.07, 9,647.79 and 3,147.45 is: 4,716.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,438.07 : 9,647.79 = 3,147.45 : x
  2. Step 2: Convert to fraction form
    6,438.07/9,647.79 = 3,147.45/x
  3. Step 3: Cross multiply
    6,438.07x = 9,647.79 × 3,147.45
  4. Step 4: Simplify right side
    6,438.07x = 30,365,888.40
  5. Step 5: Solve for x
    x = 30,365,888.40/6,438.07
  6. Step 6: Final answer
    x = 4,716.61

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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.