Home / 2,977.79-4,109.40-1,651.55

Finding the Fourth Proportional to 2,977.79, 4,109.40 and 1,651.55

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Solution

The fourth proportional to 2,977.79, 4,109.40 and 1,651.55 is: 2,279.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,977.79 : 4,109.40 = 1,651.55 : x
  2. Step 2: Convert to fraction form
    2,977.79/4,109.40 = 1,651.55/x
  3. Step 3: Cross multiply
    2,977.79x = 4,109.40 × 1,651.55
  4. Step 4: Simplify right side
    2,977.79x = 6,786,879.57
  5. Step 5: Solve for x
    x = 6,786,879.57/2,977.79
  6. Step 6: Final answer
    x = 2,279.17

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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.