Home / 8,621.44-12,928.80-3,693.44

Finding the Fourth Proportional to 8,621.44, 12,928.80 and 3,693.44

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Solution

The fourth proportional to 8,621.44, 12,928.80 and 3,693.44 is: 5,538.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.44 : 12,928.80 = 3,693.44 : x
  2. Step 2: Convert to fraction form
    8,621.44/12,928.80 = 3,693.44/x
  3. Step 3: Cross multiply
    8,621.44x = 12,928.80 × 3,693.44
  4. Step 4: Simplify right side
    8,621.44x = 47,751,747.07
  5. Step 5: Solve for x
    x = 47,751,747.07/8,621.44
  6. Step 6: Final answer
    x = 5,538.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.