Home / 3,907.37-5,392.78-2,491.67

Finding the Fourth Proportional to 3,907.37, 5,392.78 and 2,491.67

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Solution

The fourth proportional to 3,907.37, 5,392.78 and 2,491.67 is: 3,438.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.37 : 5,392.78 = 2,491.67 : x
  2. Step 2: Convert to fraction form
    3,907.37/5,392.78 = 2,491.67/x
  3. Step 3: Cross multiply
    3,907.37x = 5,392.78 × 2,491.67
  4. Step 4: Simplify right side
    3,907.37x = 13,437,035.40
  5. Step 5: Solve for x
    x = 13,437,035.40/3,907.37
  6. Step 6: Final answer
    x = 3,438.89

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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.