Home / 5,902.22-8,139.75-4,910.78

Finding the Fourth Proportional to 5,902.22, 8,139.75 and 4,910.78

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Solution

The fourth proportional to 5,902.22, 8,139.75 and 4,910.78 is: 6,772.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,902.22 : 8,139.75 = 4,910.78 : x
  2. Step 2: Convert to fraction form
    5,902.22/8,139.75 = 4,910.78/x
  3. Step 3: Cross multiply
    5,902.22x = 8,139.75 × 4,910.78
  4. Step 4: Simplify right side
    5,902.22x = 39,972,521.51
  5. Step 5: Solve for x
    x = 39,972,521.51/5,902.22
  6. Step 6: Final answer
    x = 6,772.46

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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.