Home / 8,390.23-12,582.30-3,391.04

Finding the Fourth Proportional to 8,390.23, 12,582.30 and 3,391.04

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Solution

The fourth proportional to 8,390.23, 12,582.30 and 3,391.04 is: 5,085.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390.23 : 12,582.30 = 3,391.04 : x
  2. Step 2: Convert to fraction form
    8,390.23/12,582.30 = 3,391.04/x
  3. Step 3: Cross multiply
    8,390.23x = 12,582.30 × 3,391.04
  4. Step 4: Simplify right side
    8,390.23x = 42,667,082.59
  5. Step 5: Solve for x
    x = 42,667,082.59/8,390.23
  6. Step 6: Final answer
    x = 5,085.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.