Home / 2,288.32-3,158.70-1,392.08

Finding the Fourth Proportional to 2,288.32, 3,158.70 and 1,392.08

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Solution

The fourth proportional to 2,288.32, 3,158.70 and 1,392.08 is: 1,921.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,288.32 : 3,158.70 = 1,392.08 : x
  2. Step 2: Convert to fraction form
    2,288.32/3,158.70 = 1,392.08/x
  3. Step 3: Cross multiply
    2,288.32x = 3,158.70 × 1,392.08
  4. Step 4: Simplify right side
    2,288.32x = 4,397,163.10
  5. Step 5: Solve for x
    x = 4,397,163.10/2,288.32
  6. Step 6: Final answer
    x = 1,921.57

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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.