Home / 1,395.14-2,089.86-1,119.74

Finding the Fourth Proportional to 1,395.14, 2,089.86 and 1,119.74

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Solution

The fourth proportional to 1,395.14, 2,089.86 and 1,119.74 is: 1,677.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.14 : 2,089.86 = 1,119.74 : x
  2. Step 2: Convert to fraction form
    1,395.14/2,089.86 = 1,119.74/x
  3. Step 3: Cross multiply
    1,395.14x = 2,089.86 × 1,119.74
  4. Step 4: Simplify right side
    1,395.14x = 2,340,099.84
  5. Step 5: Solve for x
    x = 2,340,099.84/1,395.14
  6. Step 6: Final answer
    x = 1,677.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.