Home / 3,076.20-4,245.03-1,678.92

Finding the Fourth Proportional to 3,076.20, 4,245.03 and 1,678.92

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Solution

The fourth proportional to 3,076.20, 4,245.03 and 1,678.92 is: 2,316.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,076.20 : 4,245.03 = 1,678.92 : x
  2. Step 2: Convert to fraction form
    3,076.20/4,245.03 = 1,678.92/x
  3. Step 3: Cross multiply
    3,076.20x = 4,245.03 × 1,678.92
  4. Step 4: Simplify right side
    3,076.20x = 7,127,065.77
  5. Step 5: Solve for x
    x = 7,127,065.77/3,076.20
  6. Step 6: Final answer
    x = 2,316.84

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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.