Home / 3,676.48-5,069.76-3,178.72

Finding the Fourth Proportional to 3,676.48, 5,069.76 and 3,178.72

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Solution

The fourth proportional to 3,676.48, 5,069.76 and 3,178.72 is: 4,383.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,676.48 : 5,069.76 = 3,178.72 : x
  2. Step 2: Convert to fraction form
    3,676.48/5,069.76 = 3,178.72/x
  3. Step 3: Cross multiply
    3,676.48x = 5,069.76 × 3,178.72
  4. Step 4: Simplify right side
    3,676.48x = 16,115,347.51
  5. Step 5: Solve for x
    x = 16,115,347.51/3,676.48
  6. Step 6: Final answer
    x = 4,383.36

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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.