Home / 3,891.59-5,370.44-2,123.23

Finding the Fourth Proportional to 3,891.59, 5,370.44 and 2,123.23

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Solution

The fourth proportional to 3,891.59, 5,370.44 and 2,123.23 is: 2,930.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.59 : 5,370.44 = 2,123.23 : x
  2. Step 2: Convert to fraction form
    3,891.59/5,370.44 = 2,123.23/x
  3. Step 3: Cross multiply
    3,891.59x = 5,370.44 × 2,123.23
  4. Step 4: Simplify right side
    3,891.59x = 11,402,665.35
  5. Step 5: Solve for x
    x = 11,402,665.35/3,891.59
  6. Step 6: Final answer
    x = 2,930.08

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1.5x scale

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.