Home / 1,715.72-2,365.95-1,399.97

Finding the Fourth Proportional to 1,715.72, 2,365.95 and 1,399.97

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Solution

The fourth proportional to 1,715.72, 2,365.95 and 1,399.97 is: 1,930.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,715.72 : 2,365.95 = 1,399.97 : x
  2. Step 2: Convert to fraction form
    1,715.72/2,365.95 = 1,399.97/x
  3. Step 3: Cross multiply
    1,715.72x = 2,365.95 × 1,399.97
  4. Step 4: Simplify right side
    1,715.72x = 3,312,252.44
  5. Step 5: Solve for x
    x = 3,312,252.44/1,715.72
  6. Step 6: Final answer
    x = 1,930.54

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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.