Home / 2,178.22-3,004.64-1,392.66

Finding the Fourth Proportional to 2,178.22, 3,004.64 and 1,392.66

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Solution

The fourth proportional to 2,178.22, 3,004.64 and 1,392.66 is: 1,921.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.22 : 3,004.64 = 1,392.66 : x
  2. Step 2: Convert to fraction form
    2,178.22/3,004.64 = 1,392.66/x
  3. Step 3: Cross multiply
    2,178.22x = 3,004.64 × 1,392.66
  4. Step 4: Simplify right side
    2,178.22x = 4,184,441.94
  5. Step 5: Solve for x
    x = 4,184,441.94/2,178.22
  6. Step 6: Final answer
    x = 1,921.04

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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.