Home / 3,199.88-4,415.68-1,783.72

Finding the Fourth Proportional to 3,199.88, 4,415.68 and 1,783.72

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Solution

The fourth proportional to 3,199.88, 4,415.68 and 1,783.72 is: 2,461.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,199.88 : 4,415.68 = 1,783.72 : x
  2. Step 2: Convert to fraction form
    3,199.88/4,415.68 = 1,783.72/x
  3. Step 3: Cross multiply
    3,199.88x = 4,415.68 × 1,783.72
  4. Step 4: Simplify right side
    3,199.88x = 7,876,335.01
  5. Step 5: Solve for x
    x = 7,876,335.01/3,199.88
  6. Step 6: Final answer
    x = 2,461.45

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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.