Home / 3,985.08-5,977.65-1,388.01

Finding the Fourth Proportional to 3,985.08, 5,977.65 and 1,388.01

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Solution

The fourth proportional to 3,985.08, 5,977.65 and 1,388.01 is: 2,082.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.08 : 5,977.65 = 1,388.01 : x
  2. Step 2: Convert to fraction form
    3,985.08/5,977.65 = 1,388.01/x
  3. Step 3: Cross multiply
    3,985.08x = 5,977.65 × 1,388.01
  4. Step 4: Simplify right side
    3,985.08x = 8,297,037.98
  5. Step 5: Solve for x
    x = 8,297,037.98/3,985.08
  6. Step 6: Final answer
    x = 2,082.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.