Home / 7,921.33-10,928.79-4,893.21

Finding the Fourth Proportional to 7,921.33, 10,928.79 and 4,893.21

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Solution

The fourth proportional to 7,921.33, 10,928.79 and 4,893.21 is: 6,751.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.33 : 10,928.79 = 4,893.21 : x
  2. Step 2: Convert to fraction form
    7,921.33/10,928.79 = 4,893.21/x
  3. Step 3: Cross multiply
    7,921.33x = 10,928.79 × 4,893.21
  4. Step 4: Simplify right side
    7,921.33x = 53,476,864.52
  5. Step 5: Solve for x
    x = 53,476,864.52/7,921.33
  6. Step 6: Final answer
    x = 6,751.00

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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.