Home / 7,028.40-10,539.90-2,643.48

Finding the Fourth Proportional to 7,028.40, 10,539.90 and 2,643.48

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Solution

The fourth proportional to 7,028.40, 10,539.90 and 2,643.48 is: 3,964.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,028.40 : 10,539.90 = 2,643.48 : x
  2. Step 2: Convert to fraction form
    7,028.40/10,539.90 = 2,643.48/x
  3. Step 3: Cross multiply
    7,028.40x = 10,539.90 × 2,643.48
  4. Step 4: Simplify right side
    7,028.40x = 27,862,014.85
  5. Step 5: Solve for x
    x = 27,862,014.85/7,028.40
  6. Step 6: Final answer
    x = 3,964.20

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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.