Home / 6,928.36-9,561.36-3,784.78

Finding the Fourth Proportional to 6,928.36, 9,561.36 and 3,784.78

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Solution

The fourth proportional to 6,928.36, 9,561.36 and 3,784.78 is: 5,223.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,928.36 : 9,561.36 = 3,784.78 : x
  2. Step 2: Convert to fraction form
    6,928.36/9,561.36 = 3,784.78/x
  3. Step 3: Cross multiply
    6,928.36x = 9,561.36 × 3,784.78
  4. Step 4: Simplify right side
    6,928.36x = 36,187,644.10
  5. Step 5: Solve for x
    x = 36,187,644.10/6,928.36
  6. Step 6: Final answer
    x = 5,223.12

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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.