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Finding the Fourth Proportional to 7,065.26, 9,750.21 and 3,878.69

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Solution

The fourth proportional to 7,065.26, 9,750.21 and 3,878.69 is: 5,352.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,065.26 : 9,750.21 = 3,878.69 : x
  2. Step 2: Convert to fraction form
    7,065.26/9,750.21 = 3,878.69/x
  3. Step 3: Cross multiply
    7,065.26x = 9,750.21 × 3,878.69
  4. Step 4: Simplify right side
    7,065.26x = 37,817,978.73
  5. Step 5: Solve for x
    x = 37,817,978.73/7,065.26
  6. Step 6: Final answer
    x = 5,352.67

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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.