Home / 3,188.16-4,780.68-1,889.28

Finding the Fourth Proportional to 3,188.16, 4,780.68 and 1,889.28

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Solution

The fourth proportional to 3,188.16, 4,780.68 and 1,889.28 is: 2,833.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.16 : 4,780.68 = 1,889.28 : x
  2. Step 2: Convert to fraction form
    3,188.16/4,780.68 = 1,889.28/x
  3. Step 3: Cross multiply
    3,188.16x = 4,780.68 × 1,889.28
  4. Step 4: Simplify right side
    3,188.16x = 9,032,043.11
  5. Step 5: Solve for x
    x = 9,032,043.11/3,188.16
  6. Step 6: Final answer
    x = 2,833.00

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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.