Home / 1,025.19-1,405.38-1,006.56

Finding the Fourth Proportional to 1,025.19, 1,405.38 and 1,006.56

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Solution

The fourth proportional to 1,025.19, 1,405.38 and 1,006.56 is: 1,379.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,025.19 : 1,405.38 = 1,006.56 : x
  2. Step 2: Convert to fraction form
    1,025.19/1,405.38 = 1,006.56/x
  3. Step 3: Cross multiply
    1,025.19x = 1,405.38 × 1,006.56
  4. Step 4: Simplify right side
    1,025.19x = 1,414,603.07
  5. Step 5: Solve for x
    x = 1,414,603.07/1,025.19
  6. Step 6: Final answer
    x = 1,379.84

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.