Home / 2,179.55-3,008.19-1,393.67

Finding the Fourth Proportional to 2,179.55, 3,008.19 and 1,393.67

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Solution

The fourth proportional to 2,179.55, 3,008.19 and 1,393.67 is: 1,923.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.55 : 3,008.19 = 1,393.67 : x
  2. Step 2: Convert to fraction form
    2,179.55/3,008.19 = 1,393.67/x
  3. Step 3: Cross multiply
    2,179.55x = 3,008.19 × 1,393.67
  4. Step 4: Simplify right side
    2,179.55x = 4,192,409.12
  5. Step 5: Solve for x
    x = 4,192,409.12/2,179.55
  6. Step 6: Final answer
    x = 1,923.52

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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.