Home / 5,166.77-7,129.94-2,808.86

Finding the Fourth Proportional to 5,166.77, 7,129.94 and 2,808.86

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Solution

The fourth proportional to 5,166.77, 7,129.94 and 2,808.86 is: 3,876.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,166.77 : 7,129.94 = 2,808.86 : x
  2. Step 2: Convert to fraction form
    5,166.77/7,129.94 = 2,808.86/x
  3. Step 3: Cross multiply
    5,166.77x = 7,129.94 × 2,808.86
  4. Step 4: Simplify right side
    5,166.77x = 20,026,953.57
  5. Step 5: Solve for x
    x = 20,026,953.57/5,166.77
  6. Step 6: Final answer
    x = 3,876.11

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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.