Home / 3,579.21-4,939.25-1,985.81

Finding the Fourth Proportional to 3,579.21, 4,939.25 and 1,985.81

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Solution

The fourth proportional to 3,579.21, 4,939.25 and 1,985.81 is: 2,740.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,579.21 : 4,939.25 = 1,985.81 : x
  2. Step 2: Convert to fraction form
    3,579.21/4,939.25 = 1,985.81/x
  3. Step 3: Cross multiply
    3,579.21x = 4,939.25 × 1,985.81
  4. Step 4: Simplify right side
    3,579.21x = 9,808,377.42
  5. Step 5: Solve for x
    x = 9,808,377.42/3,579.21
  6. Step 6: Final answer
    x = 2,740.37

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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.