Home / 1,378.26-1,900.98-1,316.16

Finding the Fourth Proportional to 1,378.26, 1,900.98 and 1,316.16

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Solution

The fourth proportional to 1,378.26, 1,900.98 and 1,316.16 is: 1,815.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.26 : 1,900.98 = 1,316.16 : x
  2. Step 2: Convert to fraction form
    1,378.26/1,900.98 = 1,316.16/x
  3. Step 3: Cross multiply
    1,378.26x = 1,900.98 × 1,316.16
  4. Step 4: Simplify right side
    1,378.26x = 2,501,993.84
  5. Step 5: Solve for x
    x = 2,501,993.84/1,378.26
  6. Step 6: Final answer
    x = 1,815.33

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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.