Home / 1,396.12-1,925.76-1,063.84

Finding the Fourth Proportional to 1,396.12, 1,925.76 and 1,063.84

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Solution

The fourth proportional to 1,396.12, 1,925.76 and 1,063.84 is: 1,467.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396.12 : 1,925.76 = 1,063.84 : x
  2. Step 2: Convert to fraction form
    1,396.12/1,925.76 = 1,063.84/x
  3. Step 3: Cross multiply
    1,396.12x = 1,925.76 × 1,063.84
  4. Step 4: Simplify right side
    1,396.12x = 2,048,700.52
  5. Step 5: Solve for x
    x = 2,048,700.52/1,396.12
  6. Step 6: Final answer
    x = 1,467.42

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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.