Home / 9,579.07-13,218.98-5,387.32

Finding the Fourth Proportional to 9,579.07, 13,218.98 and 5,387.32

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Solution

The fourth proportional to 9,579.07, 13,218.98 and 5,387.32 is: 7,434.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,579.07 : 13,218.98 = 5,387.32 : x
  2. Step 2: Convert to fraction form
    9,579.07/13,218.98 = 5,387.32/x
  3. Step 3: Cross multiply
    9,579.07x = 13,218.98 × 5,387.32
  4. Step 4: Simplify right side
    9,579.07x = 71,214,855.75
  5. Step 5: Solve for x
    x = 71,214,855.75/9,579.07
  6. Step 6: Final answer
    x = 7,434.42

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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.