Home / 3,428.86-4,728.52-2,897.76

Finding the Fourth Proportional to 3,428.86, 4,728.52 and 2,897.76

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Solution

The fourth proportional to 3,428.86, 4,728.52 and 2,897.76 is: 3,996.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.86 : 4,728.52 = 2,897.76 : x
  2. Step 2: Convert to fraction form
    3,428.86/4,728.52 = 2,897.76/x
  3. Step 3: Cross multiply
    3,428.86x = 4,728.52 × 2,897.76
  4. Step 4: Simplify right side
    3,428.86x = 13,702,097.05
  5. Step 5: Solve for x
    x = 13,702,097.05/3,428.86
  6. Step 6: Final answer
    x = 3,996.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.