Home / 3,209.91-4,429.67-1,865.72

Finding the Fourth Proportional to 3,209.91, 4,429.67 and 1,865.72

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Solution

The fourth proportional to 3,209.91, 4,429.67 and 1,865.72 is: 2,574.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209.91 : 4,429.67 = 1,865.72 : x
  2. Step 2: Convert to fraction form
    3,209.91/4,429.67 = 1,865.72/x
  3. Step 3: Cross multiply
    3,209.91x = 4,429.67 × 1,865.72
  4. Step 4: Simplify right side
    3,209.91x = 8,264,492.44
  5. Step 5: Solve for x
    x = 8,264,492.44/3,209.91
  6. Step 6: Final answer
    x = 2,574.68

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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.