Home / 10,383.78-15,575.76-3,458.28

Finding the Fourth Proportional to 10,383.78, 15,575.76 and 3,458.28

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Solution

The fourth proportional to 10,383.78, 15,575.76 and 3,458.28 is: 5,187.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,383.78 : 15,575.76 = 3,458.28 : x
  2. Step 2: Convert to fraction form
    10,383.78/15,575.76 = 3,458.28/x
  3. Step 3: Cross multiply
    10,383.78x = 15,575.76 × 3,458.28
  4. Step 4: Simplify right side
    10,383.78x = 53,865,339.29
  5. Step 5: Solve for x
    x = 53,865,339.29/10,383.78
  6. Step 6: Final answer
    x = 5,187.45

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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.