Home / 3,984.70-5,498.58-2,216.20

Finding the Fourth Proportional to 3,984.70, 5,498.58 and 2,216.20

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Solution

The fourth proportional to 3,984.70, 5,498.58 and 2,216.20 is: 3,058.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.70 : 5,498.58 = 2,216.20 : x
  2. Step 2: Convert to fraction form
    3,984.70/5,498.58 = 2,216.20/x
  3. Step 3: Cross multiply
    3,984.70x = 5,498.58 × 2,216.20
  4. Step 4: Simplify right side
    3,984.70x = 12,185,953.00
  5. Step 5: Solve for x
    x = 12,185,953.00/3,984.70
  6. Step 6: Final answer
    x = 3,058.19

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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.