Home / 2,169.19-2,991.14-2,123.63

Finding the Fourth Proportional to 2,169.19, 2,991.14 and 2,123.63

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Solution

The fourth proportional to 2,169.19, 2,991.14 and 2,123.63 is: 2,928.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.19 : 2,991.14 = 2,123.63 : x
  2. Step 2: Convert to fraction form
    2,169.19/2,991.14 = 2,123.63/x
  3. Step 3: Cross multiply
    2,169.19x = 2,991.14 × 2,123.63
  4. Step 4: Simplify right side
    2,169.19x = 6,352,059.68
  5. Step 5: Solve for x
    x = 6,352,059.68/2,169.19
  6. Step 6: Final answer
    x = 2,928.32

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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.