Home / 5,190.88-7,785.36-2,717.92

Finding the Fourth Proportional to 5,190.88, 7,785.36 and 2,717.92

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Solution

The fourth proportional to 5,190.88, 7,785.36 and 2,717.92 is: 4,076.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.88 : 7,785.36 = 2,717.92 : x
  2. Step 2: Convert to fraction form
    5,190.88/7,785.36 = 2,717.92/x
  3. Step 3: Cross multiply
    5,190.88x = 7,785.36 × 2,717.92
  4. Step 4: Simplify right side
    5,190.88x = 21,159,985.65
  5. Step 5: Solve for x
    x = 21,159,985.65/5,190.88
  6. Step 6: Final answer
    x = 4,076.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.