Home / 1,313.12-1,954.18-1,269.38

Finding the Fourth Proportional to 1,313.12, 1,954.18 and 1,269.38

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Solution

The fourth proportional to 1,313.12, 1,954.18 and 1,269.38 is: 1,889.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313.12 : 1,954.18 = 1,269.38 : x
  2. Step 2: Convert to fraction form
    1,313.12/1,954.18 = 1,269.38/x
  3. Step 3: Cross multiply
    1,313.12x = 1,954.18 × 1,269.38
  4. Step 4: Simplify right side
    1,313.12x = 2,480,584.06
  5. Step 5: Solve for x
    x = 2,480,584.06/1,313.12
  6. Step 6: Final answer
    x = 1,889.08

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.