Home / 3,119.76-4,680.36-1,660.32

Finding the Fourth Proportional to 3,119.76, 4,680.36 and 1,660.32

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Solution

The fourth proportional to 3,119.76, 4,680.36 and 1,660.32 is: 2,490.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.76 : 4,680.36 = 1,660.32 : x
  2. Step 2: Convert to fraction form
    3,119.76/4,680.36 = 1,660.32/x
  3. Step 3: Cross multiply
    3,119.76x = 4,680.36 × 1,660.32
  4. Step 4: Simplify right side
    3,119.76x = 7,770,895.32
  5. Step 5: Solve for x
    x = 7,770,895.32/3,119.76
  6. Step 6: Final answer
    x = 2,490.86

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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.