Home / 1,918.08-2,871.98-1,095.22

Finding the Fourth Proportional to 1,918.08, 2,871.98 and 1,095.22

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Solution

The fourth proportional to 1,918.08, 2,871.98 and 1,095.22 is: 1,639.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.08 : 2,871.98 = 1,095.22 : x
  2. Step 2: Convert to fraction form
    1,918.08/2,871.98 = 1,095.22/x
  3. Step 3: Cross multiply
    1,918.08x = 2,871.98 × 1,095.22
  4. Step 4: Simplify right side
    1,918.08x = 3,145,447.55
  5. Step 5: Solve for x
    x = 3,145,447.55/1,918.08
  6. Step 6: Final answer
    x = 1,639.90

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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.