Home / 9,478.24-13,080.88-5,286.88

Finding the Fourth Proportional to 9,478.24, 13,080.88 and 5,286.88

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Solution

The fourth proportional to 9,478.24, 13,080.88 and 5,286.88 is: 7,296.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,478.24 : 13,080.88 = 5,286.88 : x
  2. Step 2: Convert to fraction form
    9,478.24/13,080.88 = 5,286.88/x
  3. Step 3: Cross multiply
    9,478.24x = 13,080.88 × 5,286.88
  4. Step 4: Simplify right side
    9,478.24x = 69,157,042.85
  5. Step 5: Solve for x
    x = 69,157,042.85/9,478.24
  6. Step 6: Final answer
    x = 7,296.40

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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.