Home / 2,923.75-4,034.78-2,178.35

Finding the Fourth Proportional to 2,923.75, 4,034.78 and 2,178.35

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Solution

The fourth proportional to 2,923.75, 4,034.78 and 2,178.35 is: 3,006.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,923.75 : 4,034.78 = 2,178.35 : x
  2. Step 2: Convert to fraction form
    2,923.75/4,034.78 = 2,178.35/x
  3. Step 3: Cross multiply
    2,923.75x = 4,034.78 × 2,178.35
  4. Step 4: Simplify right side
    2,923.75x = 8,789,163.01
  5. Step 5: Solve for x
    x = 8,789,163.01/2,923.75
  6. Step 6: Final answer
    x = 3,006.13

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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.