Home / 3,119.52-4,302.72-2,123.28

Finding the Fourth Proportional to 3,119.52, 4,302.72 and 2,123.28

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Solution

The fourth proportional to 3,119.52, 4,302.72 and 2,123.28 is: 2,928.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.52 : 4,302.72 = 2,123.28 : x
  2. Step 2: Convert to fraction form
    3,119.52/4,302.72 = 2,123.28/x
  3. Step 3: Cross multiply
    3,119.52x = 4,302.72 × 2,123.28
  4. Step 4: Simplify right side
    3,119.52x = 9,135,879.32
  5. Step 5: Solve for x
    x = 9,135,879.32/3,119.52
  6. Step 6: Final answer
    x = 2,928.62

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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.