Home / 5,427.96-8,139.20-1,917.44

Finding the Fourth Proportional to 5,427.96, 8,139.20 and 1,917.44

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Solution

The fourth proportional to 5,427.96, 8,139.20 and 1,917.44 is: 2,875.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,427.96 : 8,139.20 = 1,917.44 : x
  2. Step 2: Convert to fraction form
    5,427.96/8,139.20 = 1,917.44/x
  3. Step 3: Cross multiply
    5,427.96x = 8,139.20 × 1,917.44
  4. Step 4: Simplify right side
    5,427.96x = 15,606,427.65
  5. Step 5: Solve for x
    x = 15,606,427.65/5,427.96
  6. Step 6: Final answer
    x = 2,875.19

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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.