Home / 7,928.07-10,940.43-4,391.20

Finding the Fourth Proportional to 7,928.07, 10,940.43 and 4,391.20

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Solution

The fourth proportional to 7,928.07, 10,940.43 and 4,391.20 is: 6,059.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,928.07 : 10,940.43 = 4,391.20 : x
  2. Step 2: Convert to fraction form
    7,928.07/10,940.43 = 4,391.20/x
  3. Step 3: Cross multiply
    7,928.07x = 10,940.43 × 4,391.20
  4. Step 4: Simplify right side
    7,928.07x = 48,041,616.22
  5. Step 5: Solve for x
    x = 48,041,616.22/7,928.07
  6. Step 6: Final answer
    x = 6,059.69

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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.