Home / 3,428.56-5,139.75-1,235.76

Finding the Fourth Proportional to 3,428.56, 5,139.75 and 1,235.76

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Solution

The fourth proportional to 3,428.56, 5,139.75 and 1,235.76 is: 1,852.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.56 : 5,139.75 = 1,235.76 : x
  2. Step 2: Convert to fraction form
    3,428.56/5,139.75 = 1,235.76/x
  3. Step 3: Cross multiply
    3,428.56x = 5,139.75 × 1,235.76
  4. Step 4: Simplify right side
    3,428.56x = 6,351,497.46
  5. Step 5: Solve for x
    x = 6,351,497.46/3,428.56
  6. Step 6: Final answer
    x = 1,852.53

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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.