Home / 1,318.19-1,965.27-1,284.53

Finding the Fourth Proportional to 1,318.19, 1,965.27 and 1,284.53

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Solution

The fourth proportional to 1,318.19, 1,965.27 and 1,284.53 is: 1,915.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.19 : 1,965.27 = 1,284.53 : x
  2. Step 2: Convert to fraction form
    1,318.19/1,965.27 = 1,284.53/x
  3. Step 3: Cross multiply
    1,318.19x = 1,965.27 × 1,284.53
  4. Step 4: Simplify right side
    1,318.19x = 2,524,448.27
  5. Step 5: Solve for x
    x = 2,524,448.27/1,318.19
  6. Step 6: Final answer
    x = 1,915.09

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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.