Home / 3,123.92-4,300.04-2,828.68

Finding the Fourth Proportional to 3,123.92, 4,300.04 and 2,828.68

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Solution

The fourth proportional to 3,123.92, 4,300.04 and 2,828.68 is: 3,893.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.92 : 4,300.04 = 2,828.68 : x
  2. Step 2: Convert to fraction form
    3,123.92/4,300.04 = 2,828.68/x
  3. Step 3: Cross multiply
    3,123.92x = 4,300.04 × 2,828.68
  4. Step 4: Simplify right side
    3,123.92x = 12,163,433.47
  5. Step 5: Solve for x
    x = 12,163,433.47/3,123.92
  6. Step 6: Final answer
    x = 3,893.64

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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.