Home / 5,109.40-7,050.36-2,871

Finding the Fourth Proportional to 5,109.40, 7,050.36 and 2,871

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Solution

The fourth proportional to 5,109.40, 7,050.36 and 2,871 is: 3,961.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.40 : 7,050.36 = 2,871 : x
  2. Step 2: Convert to fraction form
    5,109.40/7,050.36 = 2,871/x
  3. Step 3: Cross multiply
    5,109.40x = 7,050.36 × 2,871
  4. Step 4: Simplify right side
    5,109.40x = 20,241,583.56
  5. Step 5: Solve for x
    x = 20,241,583.56/5,109.40
  6. Step 6: Final answer
    x = 3,961.64

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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.