Home / 1,865.08-2,798.07-1,318.33

Finding the Fourth Proportional to 1,865.08, 2,798.07 and 1,318.33

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Solution

The fourth proportional to 1,865.08, 2,798.07 and 1,318.33 is: 1,977.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,865.08 : 2,798.07 = 1,318.33 : x
  2. Step 2: Convert to fraction form
    1,865.08/2,798.07 = 1,318.33/x
  3. Step 3: Cross multiply
    1,865.08x = 2,798.07 × 1,318.33
  4. Step 4: Simplify right side
    1,865.08x = 3,688,779.62
  5. Step 5: Solve for x
    x = 3,688,779.62/1,865.08
  6. Step 6: Final answer
    x = 1,977.81

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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.