Home / 4,715.17-7,072.79-1,428.50

Finding the Fourth Proportional to 4,715.17, 7,072.79 and 1,428.50

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Solution

The fourth proportional to 4,715.17, 7,072.79 and 1,428.50 is: 2,142.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,715.17 : 7,072.79 = 1,428.50 : x
  2. Step 2: Convert to fraction form
    4,715.17/7,072.79 = 1,428.50/x
  3. Step 3: Cross multiply
    4,715.17x = 7,072.79 × 1,428.50
  4. Step 4: Simplify right side
    4,715.17x = 10,103,491.05
  5. Step 5: Solve for x
    x = 10,103,491.05/4,715.17
  6. Step 6: Final answer
    x = 2,142.76

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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.