Home / 6,785.80-10,178.70-2,105.80

Finding the Fourth Proportional to 6,785.80, 10,178.70 and 2,105.80

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Solution

The fourth proportional to 6,785.80, 10,178.70 and 2,105.80 is: 3,158.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,785.80 : 10,178.70 = 2,105.80 : x
  2. Step 2: Convert to fraction form
    6,785.80/10,178.70 = 2,105.80/x
  3. Step 3: Cross multiply
    6,785.80x = 10,178.70 × 2,105.80
  4. Step 4: Simplify right side
    6,785.80x = 21,434,306.46
  5. Step 5: Solve for x
    x = 21,434,306.46/6,785.80
  6. Step 6: Final answer
    x = 3,158.70

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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.