Home / 5,178.49-7,765.43-1,889.28

Finding the Fourth Proportional to 5,178.49, 7,765.43 and 1,889.28

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Solution

The fourth proportional to 5,178.49, 7,765.43 and 1,889.28 is: 2,833.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.49 : 7,765.43 = 1,889.28 : x
  2. Step 2: Convert to fraction form
    5,178.49/7,765.43 = 1,889.28/x
  3. Step 3: Cross multiply
    5,178.49x = 7,765.43 × 1,889.28
  4. Step 4: Simplify right side
    5,178.49x = 14,671,071.59
  5. Step 5: Solve for x
    x = 14,671,071.59/5,178.49
  6. Step 6: Final answer
    x = 2,833.08

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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.