Home / 5,166.72-7,129.85-3,176.55

Finding the Fourth Proportional to 5,166.72, 7,129.85 and 3,176.55

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Solution

The fourth proportional to 5,166.72, 7,129.85 and 3,176.55 is: 4,383.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,166.72 : 7,129.85 = 3,176.55 : x
  2. Step 2: Convert to fraction form
    5,166.72/7,129.85 = 3,176.55/x
  3. Step 3: Cross multiply
    5,166.72x = 7,129.85 × 3,176.55
  4. Step 4: Simplify right side
    5,166.72x = 22,648,309.13
  5. Step 5: Solve for x
    x = 22,648,309.13/5,166.72
  6. Step 6: Final answer
    x = 4,383.50

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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.