Home / 1,516.36-2,275.44-1,420.38

Finding the Fourth Proportional to 1,516.36, 2,275.44 and 1,420.38

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Solution

The fourth proportional to 1,516.36, 2,275.44 and 1,420.38 is: 2,131.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,516.36 : 2,275.44 = 1,420.38 : x
  2. Step 2: Convert to fraction form
    1,516.36/2,275.44 = 1,420.38/x
  3. Step 3: Cross multiply
    1,516.36x = 2,275.44 × 1,420.38
  4. Step 4: Simplify right side
    1,516.36x = 3,231,989.47
  5. Step 5: Solve for x
    x = 3,231,989.47/1,516.36
  6. Step 6: Final answer
    x = 2,131.41

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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.