Home / 5,146.91-7,102.75-2,789.06

Finding the Fourth Proportional to 5,146.91, 7,102.75 and 2,789.06

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Solution

The fourth proportional to 5,146.91, 7,102.75 and 2,789.06 is: 3,848.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,146.91 : 7,102.75 = 2,789.06 : x
  2. Step 2: Convert to fraction form
    5,146.91/7,102.75 = 2,789.06/x
  3. Step 3: Cross multiply
    5,146.91x = 7,102.75 × 2,789.06
  4. Step 4: Simplify right side
    5,146.91x = 19,809,995.92
  5. Step 5: Solve for x
    x = 19,809,995.92/5,146.91
  6. Step 6: Final answer
    x = 3,848.91

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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.