Home / 5,581.71-8,372.32-1,686

Finding the Fourth Proportional to 5,581.71, 8,372.32 and 1,686

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Solution

The fourth proportional to 5,581.71, 8,372.32 and 1,686 is: 2,528.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,581.71 : 8,372.32 = 1,686 : x
  2. Step 2: Convert to fraction form
    5,581.71/8,372.32 = 1,686/x
  3. Step 3: Cross multiply
    5,581.71x = 8,372.32 × 1,686
  4. Step 4: Simplify right side
    5,581.71x = 14,115,731.52
  5. Step 5: Solve for x
    x = 14,115,731.52/5,581.71
  6. Step 6: Final answer
    x = 2,528.93

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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.