Home / 5,109.12-7,657.14-2,643.48

Finding the Fourth Proportional to 5,109.12, 7,657.14 and 2,643.48

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Solution

The fourth proportional to 5,109.12, 7,657.14 and 2,643.48 is: 3,961.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.12 : 7,657.14 = 2,643.48 : x
  2. Step 2: Convert to fraction form
    5,109.12/7,657.14 = 2,643.48/x
  3. Step 3: Cross multiply
    5,109.12x = 7,657.14 × 2,643.48
  4. Step 4: Simplify right side
    5,109.12x = 20,241,496.45
  5. Step 5: Solve for x
    x = 20,241,496.45/5,109.12
  6. Step 6: Final answer
    x = 3,961.84

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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.