Home / 3,076.21-4,245.15-1,678.96

Finding the Fourth Proportional to 3,076.21, 4,245.15 and 1,678.96

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Solution

The fourth proportional to 3,076.21, 4,245.15 and 1,678.96 is: 2,316.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,076.21 : 4,245.15 = 1,678.96 : x
  2. Step 2: Convert to fraction form
    3,076.21/4,245.15 = 1,678.96/x
  3. Step 3: Cross multiply
    3,076.21x = 4,245.15 × 1,678.96
  4. Step 4: Simplify right side
    3,076.21x = 7,127,437.04
  5. Step 5: Solve for x
    x = 7,127,437.04/3,076.21
  6. Step 6: Final answer
    x = 2,316.95

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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.