Home / 1,918.08-2,869.92-1,808.64

Finding the Fourth Proportional to 1,918.08, 2,869.92 and 1,808.64

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Solution

The fourth proportional to 1,918.08, 2,869.92 and 1,808.64 is: 2,706.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.08 : 2,869.92 = 1,808.64 : x
  2. Step 2: Convert to fraction form
    1,918.08/2,869.92 = 1,808.64/x
  3. Step 3: Cross multiply
    1,918.08x = 2,869.92 × 1,808.64
  4. Step 4: Simplify right side
    1,918.08x = 5,190,652.11
  5. Step 5: Solve for x
    x = 5,190,652.11/1,918.08
  6. Step 6: Final answer
    x = 2,706.17

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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.