Home / 1,218.90-1,829.37-1,104.08

Finding the Fourth Proportional to 1,218.90, 1,829.37 and 1,104.08

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Solution

The fourth proportional to 1,218.90, 1,829.37 and 1,104.08 is: 1,657.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.90 : 1,829.37 = 1,104.08 : x
  2. Step 2: Convert to fraction form
    1,218.90/1,829.37 = 1,104.08/x
  3. Step 3: Cross multiply
    1,218.90x = 1,829.37 × 1,104.08
  4. Step 4: Simplify right side
    1,218.90x = 2,019,769.90
  5. Step 5: Solve for x
    x = 2,019,769.90/1,218.90
  6. Step 6: Final answer
    x = 1,657.05

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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.