Home / 3,484.09-4,808.38-1,991.72

Finding the Fourth Proportional to 3,484.09, 4,808.38 and 1,991.72

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Solution

The fourth proportional to 3,484.09, 4,808.38 and 1,991.72 is: 2,748.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,484.09 : 4,808.38 = 1,991.72 : x
  2. Step 2: Convert to fraction form
    3,484.09/4,808.38 = 1,991.72/x
  3. Step 3: Cross multiply
    3,484.09x = 4,808.38 × 1,991.72
  4. Step 4: Simplify right side
    3,484.09x = 9,576,951.45
  5. Step 5: Solve for x
    x = 9,576,951.45/3,484.09
  6. Step 6: Final answer
    x = 2,748.76

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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.