Home / 1,917.14-2,642.83-1,355.87

Finding the Fourth Proportional to 1,917.14, 2,642.83 and 1,355.87

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Solution

The fourth proportional to 1,917.14, 2,642.83 and 1,355.87 is: 1,869.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.14 : 2,642.83 = 1,355.87 : x
  2. Step 2: Convert to fraction form
    1,917.14/2,642.83 = 1,355.87/x
  3. Step 3: Cross multiply
    1,917.14x = 2,642.83 × 1,355.87
  4. Step 4: Simplify right side
    1,917.14x = 3,583,337.13
  5. Step 5: Solve for x
    x = 3,583,337.13/1,917.14
  6. Step 6: Final answer
    x = 1,869.11

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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.