Home / 9,579.20-13,218.36-5,387.36

Finding the Fourth Proportional to 9,579.20, 13,218.36 and 5,387.36

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Solution

The fourth proportional to 9,579.20, 13,218.36 and 5,387.36 is: 7,434.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,579.20 : 13,218.36 = 5,387.36 : x
  2. Step 2: Convert to fraction form
    9,579.20/13,218.36 = 5,387.36/x
  3. Step 3: Cross multiply
    9,579.20x = 13,218.36 × 5,387.36
  4. Step 4: Simplify right side
    9,579.20x = 71,212,063.93
  5. Step 5: Solve for x
    x = 71,212,063.93/9,579.20
  6. Step 6: Final answer
    x = 7,434.03

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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.