Home / 8,378.87-12,570.93-3,450.83

Finding the Fourth Proportional to 8,378.87, 12,570.93 and 3,450.83

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Solution

The fourth proportional to 8,378.87, 12,570.93 and 3,450.83 is: 5,177.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378.87 : 12,570.93 = 3,450.83 : x
  2. Step 2: Convert to fraction form
    8,378.87/12,570.93 = 3,450.83/x
  3. Step 3: Cross multiply
    8,378.87x = 12,570.93 × 3,450.83
  4. Step 4: Simplify right side
    8,378.87x = 43,380,079.52
  5. Step 5: Solve for x
    x = 43,380,079.52/8,378.87
  6. Step 6: Final answer
    x = 5,177.32

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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.