Home / 9,478.40-13,080.14-5,286.64

Finding the Fourth Proportional to 9,478.40, 13,080.14 and 5,286.64

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Solution

The fourth proportional to 9,478.40, 13,080.14 and 5,286.64 is: 7,295.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,478.40 : 13,080.14 = 5,286.64 : x
  2. Step 2: Convert to fraction form
    9,478.40/13,080.14 = 5,286.64/x
  3. Step 3: Cross multiply
    9,478.40x = 13,080.14 × 5,286.64
  4. Step 4: Simplify right side
    9,478.40x = 69,149,991.33
  5. Step 5: Solve for x
    x = 69,149,991.33/9,478.40
  6. Step 6: Final answer
    x = 7,295.53

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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.