Home / 1,393.14-2,079.58-1,329.96

Finding the Fourth Proportional to 1,393.14, 2,079.58 and 1,329.96

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Solution

The fourth proportional to 1,393.14, 2,079.58 and 1,329.96 is: 1,985.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393.14 : 2,079.58 = 1,329.96 : x
  2. Step 2: Convert to fraction form
    1,393.14/2,079.58 = 1,329.96/x
  3. Step 3: Cross multiply
    1,393.14x = 2,079.58 × 1,329.96
  4. Step 4: Simplify right side
    1,393.14x = 2,765,754.89
  5. Step 5: Solve for x
    x = 2,765,754.89/1,393.14
  6. Step 6: Final answer
    x = 1,985.27

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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.