Home / 3,873.85-5,345.83-2,280.67

Finding the Fourth Proportional to 3,873.85, 5,345.83 and 2,280.67

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Solution

The fourth proportional to 3,873.85, 5,345.83 and 2,280.67 is: 3,147.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,873.85 : 5,345.83 = 2,280.67 : x
  2. Step 2: Convert to fraction form
    3,873.85/5,345.83 = 2,280.67/x
  3. Step 3: Cross multiply
    3,873.85x = 5,345.83 × 2,280.67
  4. Step 4: Simplify right side
    3,873.85x = 12,192,074.11
  5. Step 5: Solve for x
    x = 12,192,074.11/3,873.85
  6. Step 6: Final answer
    x = 3,147.28

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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.