Home / 9,627.80-13,286.21-5,378.94

Finding the Fourth Proportional to 9,627.80, 13,286.21 and 5,378.94

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Solution

The fourth proportional to 9,627.80, 13,286.21 and 5,378.94 is: 7,422.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,627.80 : 13,286.21 = 5,378.94 : x
  2. Step 2: Convert to fraction form
    9,627.80/13,286.21 = 5,378.94/x
  3. Step 3: Cross multiply
    9,627.80x = 13,286.21 × 5,378.94
  4. Step 4: Simplify right side
    9,627.80x = 71,465,699.52
  5. Step 5: Solve for x
    x = 71,465,699.52/9,627.80
  6. Step 6: Final answer
    x = 7,422.85

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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.