Home / 5,825.30-8,038.90-3,172.70

Finding the Fourth Proportional to 5,825.30, 8,038.90 and 3,172.70

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Solution

The fourth proportional to 5,825.30, 8,038.90 and 3,172.70 is: 4,378.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,825.30 : 8,038.90 = 3,172.70 : x
  2. Step 2: Convert to fraction form
    5,825.30/8,038.90 = 3,172.70/x
  3. Step 3: Cross multiply
    5,825.30x = 8,038.90 × 3,172.70
  4. Step 4: Simplify right side
    5,825.30x = 25,505,018.03
  5. Step 5: Solve for x
    x = 25,505,018.03/5,825.30
  6. Step 6: Final answer
    x = 4,378.32

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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.