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Finding the Fourth Proportional to 7,749.94, 10,675.94 and 5,619.21

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Solution

The fourth proportional to 7,749.94, 10,675.94 and 5,619.21 is: 7,740.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,749.94 : 10,675.94 = 5,619.21 : x
  2. Step 2: Convert to fraction form
    7,749.94/10,675.94 = 5,619.21/x
  3. Step 3: Cross multiply
    7,749.94x = 10,675.94 × 5,619.21
  4. Step 4: Simplify right side
    7,749.94x = 59,990,310.70
  5. Step 5: Solve for x
    x = 59,990,310.70/7,749.94
  6. Step 6: Final answer
    x = 7,740.75

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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.