Home / 1,889.16-2,606.85-1,180.86

Finding the Fourth Proportional to 1,889.16, 2,606.85 and 1,180.86

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Solution

The fourth proportional to 1,889.16, 2,606.85 and 1,180.86 is: 1,629.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889.16 : 2,606.85 = 1,180.86 : x
  2. Step 2: Convert to fraction form
    1,889.16/2,606.85 = 1,180.86/x
  3. Step 3: Cross multiply
    1,889.16x = 2,606.85 × 1,180.86
  4. Step 4: Simplify right side
    1,889.16x = 3,078,324.89
  5. Step 5: Solve for x
    x = 3,078,324.89/1,889.16
  6. Step 6: Final answer
    x = 1,629.47

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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.