Home / 3,984.51-5,498.40-2,215.77

Finding the Fourth Proportional to 3,984.51, 5,498.40 and 2,215.77

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Solution

The fourth proportional to 3,984.51, 5,498.40 and 2,215.77 is: 3,057.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.51 : 5,498.40 = 2,215.77 : x
  2. Step 2: Convert to fraction form
    3,984.51/5,498.40 = 2,215.77/x
  3. Step 3: Cross multiply
    3,984.51x = 5,498.40 × 2,215.77
  4. Step 4: Simplify right side
    3,984.51x = 12,183,189.77
  5. Step 5: Solve for x
    x = 12,183,189.77/3,984.51
  6. Step 6: Final answer
    x = 3,057.64

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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.