Home / 6,939.78-10,409.58-1,674.75

Finding the Fourth Proportional to 6,939.78, 10,409.58 and 1,674.75

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Solution

The fourth proportional to 6,939.78, 10,409.58 and 1,674.75 is: 2,512.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,939.78 : 10,409.58 = 1,674.75 : x
  2. Step 2: Convert to fraction form
    6,939.78/10,409.58 = 1,674.75/x
  3. Step 3: Cross multiply
    6,939.78x = 10,409.58 × 1,674.75
  4. Step 4: Simplify right side
    6,939.78x = 17,433,424.59
  5. Step 5: Solve for x
    x = 17,433,424.59/6,939.78
  6. Step 6: Final answer
    x = 2,512.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.