Home / 3,985.29-5,977.71-1,520.36

Finding the Fourth Proportional to 3,985.29, 5,977.71 and 1,520.36

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Solution

The fourth proportional to 3,985.29, 5,977.71 and 1,520.36 is: 2,280.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.29 : 5,977.71 = 1,520.36 : x
  2. Step 2: Convert to fraction form
    3,985.29/5,977.71 = 1,520.36/x
  3. Step 3: Cross multiply
    3,985.29x = 5,977.71 × 1,520.36
  4. Step 4: Simplify right side
    3,985.29x = 9,088,286.12
  5. Step 5: Solve for x
    x = 9,088,286.12/3,985.29
  6. Step 6: Final answer
    x = 2,280.46

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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.