Home / 3,077.30-4,246.44-1,680.05

Finding the Fourth Proportional to 3,077.30, 4,246.44 and 1,680.05

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Solution

The fourth proportional to 3,077.30, 4,246.44 and 1,680.05 is: 2,318.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,077.30 : 4,246.44 = 1,680.05 : x
  2. Step 2: Convert to fraction form
    3,077.30/4,246.44 = 1,680.05/x
  3. Step 3: Cross multiply
    3,077.30x = 4,246.44 × 1,680.05
  4. Step 4: Simplify right side
    3,077.30x = 7,134,231.52
  5. Step 5: Solve for x
    x = 7,134,231.52/3,077.30
  6. Step 6: Final answer
    x = 2,318.34

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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.