Home / 3,216.90-4,825.92-1,025.40

Finding the Fourth Proportional to 3,216.90, 4,825.92 and 1,025.40

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Solution

The fourth proportional to 3,216.90, 4,825.92 and 1,025.40 is: 1,538.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,216.90 : 4,825.92 = 1,025.40 : x
  2. Step 2: Convert to fraction form
    3,216.90/4,825.92 = 1,025.40/x
  3. Step 3: Cross multiply
    3,216.90x = 4,825.92 × 1,025.40
  4. Step 4: Simplify right side
    3,216.90x = 4,948,498.37
  5. Step 5: Solve for x
    x = 4,948,498.37/3,216.90
  6. Step 6: Final answer
    x = 1,538.28

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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.