Home / 1,689.89-2,536.65-1,418.94

Finding the Fourth Proportional to 1,689.89, 2,536.65 and 1,418.94

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Solution

The fourth proportional to 1,689.89, 2,536.65 and 1,418.94 is: 2,129.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689.89 : 2,536.65 = 1,418.94 : x
  2. Step 2: Convert to fraction form
    1,689.89/2,536.65 = 1,418.94/x
  3. Step 3: Cross multiply
    1,689.89x = 2,536.65 × 1,418.94
  4. Step 4: Simplify right side
    1,689.89x = 3,599,354.15
  5. Step 5: Solve for x
    x = 3,599,354.15/1,689.89
  6. Step 6: Final answer
    x = 2,129.94

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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.