Home / 5,166.09-7,129.20-2,808.22

Finding the Fourth Proportional to 5,166.09, 7,129.20 and 2,808.22

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Solution

The fourth proportional to 5,166.09, 7,129.20 and 2,808.22 is: 3,875.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,166.09 : 7,129.20 = 2,808.22 : x
  2. Step 2: Convert to fraction form
    5,166.09/7,129.20 = 2,808.22/x
  3. Step 3: Cross multiply
    5,166.09x = 7,129.20 × 2,808.22
  4. Step 4: Simplify right side
    5,166.09x = 20,020,362.02
  5. Step 5: Solve for x
    x = 20,020,362.02/5,166.09
  6. Step 6: Final answer
    x = 3,875.34

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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.