Home / 3,390.76-5,104.15-2,889.64

Finding the Fourth Proportional to 3,390.76, 5,104.15 and 2,889.64

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Solution

The fourth proportional to 3,390.76, 5,104.15 and 2,889.64 is: 4,349.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.76 : 5,104.15 = 2,889.64 : x
  2. Step 2: Convert to fraction form
    3,390.76/5,104.15 = 2,889.64/x
  3. Step 3: Cross multiply
    3,390.76x = 5,104.15 × 2,889.64
  4. Step 4: Simplify right side
    3,390.76x = 14,749,156.01
  5. Step 5: Solve for x
    x = 14,749,156.01/3,390.76
  6. Step 6: Final answer
    x = 4,349.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.