Home / 3,108.06-4,289.40-1,929.11

Finding the Fourth Proportional to 3,108.06, 4,289.40 and 1,929.11

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Solution

The fourth proportional to 3,108.06, 4,289.40 and 1,929.11 is: 2,662.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.06 : 4,289.40 = 1,929.11 : x
  2. Step 2: Convert to fraction form
    3,108.06/4,289.40 = 1,929.11/x
  3. Step 3: Cross multiply
    3,108.06x = 4,289.40 × 1,929.11
  4. Step 4: Simplify right side
    3,108.06x = 8,274,702.99
  5. Step 5: Solve for x
    x = 8,274,702.99/3,108.06
  6. Step 6: Final answer
    x = 2,662.34

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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.