Home / 3,120.03-4,681.25-1,388.67

Finding the Fourth Proportional to 3,120.03, 4,681.25 and 1,388.67

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Solution

The fourth proportional to 3,120.03, 4,681.25 and 1,388.67 is: 2,083.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.03 : 4,681.25 = 1,388.67 : x
  2. Step 2: Convert to fraction form
    3,120.03/4,681.25 = 1,388.67/x
  3. Step 3: Cross multiply
    3,120.03x = 4,681.25 × 1,388.67
  4. Step 4: Simplify right side
    3,120.03x = 6,500,704.49
  5. Step 5: Solve for x
    x = 6,500,704.49/3,120.03
  6. Step 6: Final answer
    x = 2,083.54

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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.