Home / 1,868.70-2,578.88-1,029.43

Finding the Fourth Proportional to 1,868.70, 2,578.88 and 1,029.43

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Solution

The fourth proportional to 1,868.70, 2,578.88 and 1,029.43 is: 1,420.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.70 : 2,578.88 = 1,029.43 : x
  2. Step 2: Convert to fraction form
    1,868.70/2,578.88 = 1,029.43/x
  3. Step 3: Cross multiply
    1,868.70x = 2,578.88 × 1,029.43
  4. Step 4: Simplify right side
    1,868.70x = 2,654,771.29
  5. Step 5: Solve for x
    x = 2,654,771.29/1,868.70
  6. Step 6: Final answer
    x = 1,420.66

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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.