Home / 9,928.44-13,701.87-5,680.80

Finding the Fourth Proportional to 9,928.44, 13,701.87 and 5,680.80

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Solution

The fourth proportional to 9,928.44, 13,701.87 and 5,680.80 is: 7,839.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,928.44 : 13,701.87 = 5,680.80 : x
  2. Step 2: Convert to fraction form
    9,928.44/13,701.87 = 5,680.80/x
  3. Step 3: Cross multiply
    9,928.44x = 13,701.87 × 5,680.80
  4. Step 4: Simplify right side
    9,928.44x = 77,837,583.10
  5. Step 5: Solve for x
    x = 77,837,583.10/9,928.44
  6. Step 6: Final answer
    x = 7,839.86

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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.