Home / 9,115-12,578.71-4,923.25

Finding the Fourth Proportional to 9,115, 12,578.71 and 4,923.25

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Solution

The fourth proportional to 9,115, 12,578.71 and 4,923.25 is: 6,794.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,115 : 12,578.71 = 4,923.25 : x
  2. Step 2: Convert to fraction form
    9,115/12,578.71 = 4,923.25/x
  3. Step 3: Cross multiply
    9,115x = 12,578.71 × 4,923.25
  4. Step 4: Simplify right side
    9,115x = 61,928,121.70
  5. Step 5: Solve for x
    x = 61,928,121.70/9,115
  6. Step 6: Final answer
    x = 6,794.09

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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.