Home / 3,108.68-4,290.37-1,929.93

Finding the Fourth Proportional to 3,108.68, 4,290.37 and 1,929.93

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Solution

The fourth proportional to 3,108.68, 4,290.37 and 1,929.93 is: 2,663.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.68 : 4,290.37 = 1,929.93 : x
  2. Step 2: Convert to fraction form
    3,108.68/4,290.37 = 1,929.93/x
  3. Step 3: Cross multiply
    3,108.68x = 4,290.37 × 1,929.93
  4. Step 4: Simplify right side
    3,108.68x = 8,280,092.86
  5. Step 5: Solve for x
    x = 8,280,092.86/3,108.68
  6. Step 6: Final answer
    x = 2,663.54

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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.