Home / 3,389.54-4,676.01-1,991.30

Finding the Fourth Proportional to 3,389.54, 4,676.01 and 1,991.30

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Solution

The fourth proportional to 3,389.54, 4,676.01 and 1,991.30 is: 2,747.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.54 : 4,676.01 = 1,991.30 : x
  2. Step 2: Convert to fraction form
    3,389.54/4,676.01 = 1,991.30/x
  3. Step 3: Cross multiply
    3,389.54x = 4,676.01 × 1,991.30
  4. Step 4: Simplify right side
    3,389.54x = 9,311,338.71
  5. Step 5: Solve for x
    x = 9,311,338.71/3,389.54
  6. Step 6: Final answer
    x = 2,747.08

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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.