Home / 2,907.37-4,011.78-1,728.19

Finding the Fourth Proportional to 2,907.37, 4,011.78 and 1,728.19

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Solution

The fourth proportional to 2,907.37, 4,011.78 and 1,728.19 is: 2,384.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,907.37 : 4,011.78 = 1,728.19 : x
  2. Step 2: Convert to fraction form
    2,907.37/4,011.78 = 1,728.19/x
  3. Step 3: Cross multiply
    2,907.37x = 4,011.78 × 1,728.19
  4. Step 4: Simplify right side
    2,907.37x = 6,933,118.08
  5. Step 5: Solve for x
    x = 6,933,118.08/2,907.37
  6. Step 6: Final answer
    x = 2,384.67

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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.