Home / 2,165.45-2,988.82-1,418.99

Finding the Fourth Proportional to 2,165.45, 2,988.82 and 1,418.99

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Solution

The fourth proportional to 2,165.45, 2,988.82 and 1,418.99 is: 1,958.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.45 : 2,988.82 = 1,418.99 : x
  2. Step 2: Convert to fraction form
    2,165.45/2,988.82 = 1,418.99/x
  3. Step 3: Cross multiply
    2,165.45x = 2,988.82 × 1,418.99
  4. Step 4: Simplify right side
    2,165.45x = 4,241,090.75
  5. Step 5: Solve for x
    x = 4,241,090.75/2,165.45
  6. Step 6: Final answer
    x = 1,958.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.