Home / 3,847.12-5,309.04-2,078.74

Finding the Fourth Proportional to 3,847.12, 5,309.04 and 2,078.74

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Solution

The fourth proportional to 3,847.12, 5,309.04 and 2,078.74 is: 2,868.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.12 : 5,309.04 = 2,078.74 : x
  2. Step 2: Convert to fraction form
    3,847.12/5,309.04 = 2,078.74/x
  3. Step 3: Cross multiply
    3,847.12x = 5,309.04 × 2,078.74
  4. Step 4: Simplify right side
    3,847.12x = 11,036,113.81
  5. Step 5: Solve for x
    x = 11,036,113.81/3,847.12
  6. Step 6: Final answer
    x = 2,868.67

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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.