Home / 5,188.79-7,161.13-2,889.41

Finding the Fourth Proportional to 5,188.79, 7,161.13 and 2,889.41

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Solution

The fourth proportional to 5,188.79, 7,161.13 and 2,889.41 is: 3,987.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,188.79 : 7,161.13 = 2,889.41 : x
  2. Step 2: Convert to fraction form
    5,188.79/7,161.13 = 2,889.41/x
  3. Step 3: Cross multiply
    5,188.79x = 7,161.13 × 2,889.41
  4. Step 4: Simplify right side
    5,188.79x = 20,691,440.63
  5. Step 5: Solve for x
    x = 20,691,440.63/5,188.79
  6. Step 6: Final answer
    x = 3,987.72

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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.