Home / 3,119.80-4,276.07-3,098.20

Finding the Fourth Proportional to 3,119.80, 4,276.07 and 3,098.20

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Solution

The fourth proportional to 3,119.80, 4,276.07 and 3,098.20 is: 4,246.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.80 : 4,276.07 = 3,098.20 : x
  2. Step 2: Convert to fraction form
    3,119.80/4,276.07 = 3,098.20/x
  3. Step 3: Cross multiply
    3,119.80x = 4,276.07 × 3,098.20
  4. Step 4: Simplify right side
    3,119.80x = 13,248,120.07
  5. Step 5: Solve for x
    x = 13,248,120.07/3,119.80
  6. Step 6: Final answer
    x = 4,246.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.