Home / 4,715.16-7,072.78-1,428.51

Finding the Fourth Proportional to 4,715.16, 7,072.78 and 1,428.51

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Solution

The fourth proportional to 4,715.16, 7,072.78 and 1,428.51 is: 2,142.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,715.16 : 7,072.78 = 1,428.51 : x
  2. Step 2: Convert to fraction form
    4,715.16/7,072.78 = 1,428.51/x
  3. Step 3: Cross multiply
    4,715.16x = 7,072.78 × 1,428.51
  4. Step 4: Simplify right side
    4,715.16x = 10,103,533.39
  5. Step 5: Solve for x
    x = 10,103,533.39/4,715.16
  6. Step 6: Final answer
    x = 2,142.78

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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.