Home / 4,391.91-6,585.21-1,720.32

Finding the Fourth Proportional to 4,391.91, 6,585.21 and 1,720.32

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Solution

The fourth proportional to 4,391.91, 6,585.21 and 1,720.32 is: 2,579.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,391.91 : 6,585.21 = 1,720.32 : x
  2. Step 2: Convert to fraction form
    4,391.91/6,585.21 = 1,720.32/x
  3. Step 3: Cross multiply
    4,391.91x = 6,585.21 × 1,720.32
  4. Step 4: Simplify right side
    4,391.91x = 11,328,643.77
  5. Step 5: Solve for x
    x = 11,328,643.77/4,391.91
  6. Step 6: Final answer
    x = 2,579.43

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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.