Home / 7,065.20-9,749.65-3,878.43

Finding the Fourth Proportional to 7,065.20, 9,749.65 and 3,878.43

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Solution

The fourth proportional to 7,065.20, 9,749.65 and 3,878.43 is: 5,352.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,065.20 : 9,749.65 = 3,878.43 : x
  2. Step 2: Convert to fraction form
    7,065.20/9,749.65 = 3,878.43/x
  3. Step 3: Cross multiply
    7,065.20x = 9,749.65 × 3,878.43
  4. Step 4: Simplify right side
    7,065.20x = 37,813,335.05
  5. Step 5: Solve for x
    x = 37,813,335.05/7,065.20
  6. Step 6: Final answer
    x = 5,352.05

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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.