Home / 1,660.64-2,289.24-1,161.72

Finding the Fourth Proportional to 1,660.64, 2,289.24 and 1,161.72

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Solution

The fourth proportional to 1,660.64, 2,289.24 and 1,161.72 is: 1,601.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660.64 : 2,289.24 = 1,161.72 : x
  2. Step 2: Convert to fraction form
    1,660.64/2,289.24 = 1,161.72/x
  3. Step 3: Cross multiply
    1,660.64x = 2,289.24 × 1,161.72
  4. Step 4: Simplify right side
    1,660.64x = 2,659,455.89
  5. Step 5: Solve for x
    x = 2,659,455.89/1,660.64
  6. Step 6: Final answer
    x = 1,601.46

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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.