Home / 5,378.72-8,068.43-1,429.92

Finding the Fourth Proportional to 5,378.72, 8,068.43 and 1,429.92

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Solution

The fourth proportional to 5,378.72, 8,068.43 and 1,429.92 is: 2,144.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.72 : 8,068.43 = 1,429.92 : x
  2. Step 2: Convert to fraction form
    5,378.72/8,068.43 = 1,429.92/x
  3. Step 3: Cross multiply
    5,378.72x = 8,068.43 × 1,429.92
  4. Step 4: Simplify right side
    5,378.72x = 11,537,209.43
  5. Step 5: Solve for x
    x = 11,537,209.43/5,378.72
  6. Step 6: Final answer
    x = 2,144.97

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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.