Home / 9,627.81-13,286.27-5,378.60

Finding the Fourth Proportional to 9,627.81, 13,286.27 and 5,378.60

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Solution

The fourth proportional to 9,627.81, 13,286.27 and 5,378.60 is: 7,422.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,627.81 : 13,286.27 = 5,378.60 : x
  2. Step 2: Convert to fraction form
    9,627.81/13,286.27 = 5,378.60/x
  3. Step 3: Cross multiply
    9,627.81x = 13,286.27 × 5,378.60
  4. Step 4: Simplify right side
    9,627.81x = 71,461,438.50
  5. Step 5: Solve for x
    x = 71,461,438.50/9,627.81
  6. Step 6: Final answer
    x = 7,422.40

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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.