Home / 9,578.75-13,218.41-5,329.59

Finding the Fourth Proportional to 9,578.75, 13,218.41 and 5,329.59

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Solution

The fourth proportional to 9,578.75, 13,218.41 and 5,329.59 is: 7,354.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,578.75 : 13,218.41 = 5,329.59 : x
  2. Step 2: Convert to fraction form
    9,578.75/13,218.41 = 5,329.59/x
  3. Step 3: Cross multiply
    9,578.75x = 13,218.41 × 5,329.59
  4. Step 4: Simplify right side
    9,578.75x = 70,448,679.10
  5. Step 5: Solve for x
    x = 70,448,679.10/9,578.75
  6. Step 6: Final answer
    x = 7,354.69

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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.