Home / 5,166.21-7,129.44-2,808.35

Finding the Fourth Proportional to 5,166.21, 7,129.44 and 2,808.35

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Solution

The fourth proportional to 5,166.21, 7,129.44 and 2,808.35 is: 3,875.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,166.21 : 7,129.44 = 2,808.35 : x
  2. Step 2: Convert to fraction form
    5,166.21/7,129.44 = 2,808.35/x
  3. Step 3: Cross multiply
    5,166.21x = 7,129.44 × 2,808.35
  4. Step 4: Simplify right side
    5,166.21x = 20,021,962.82
  5. Step 5: Solve for x
    x = 20,021,962.82/5,166.21
  6. Step 6: Final answer
    x = 3,875.56

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1.5x scale

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.