Home / 3,125.75-4,309.04-1,929.94

Finding the Fourth Proportional to 3,125.75, 4,309.04 and 1,929.94

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Solution

The fourth proportional to 3,125.75, 4,309.04 and 1,929.94 is: 2,660.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.75 : 4,309.04 = 1,929.94 : x
  2. Step 2: Convert to fraction form
    3,125.75/4,309.04 = 1,929.94/x
  3. Step 3: Cross multiply
    3,125.75x = 4,309.04 × 1,929.94
  4. Step 4: Simplify right side
    3,125.75x = 8,316,168.24
  5. Step 5: Solve for x
    x = 8,316,168.24/3,125.75
  6. Step 6: Final answer
    x = 2,660.54

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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.