Home / 6,389.90-9,581.06-2,489.75

Finding the Fourth Proportional to 6,389.90, 9,581.06 and 2,489.75

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Solution

The fourth proportional to 6,389.90, 9,581.06 and 2,489.75 is: 3,733.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,389.90 : 9,581.06 = 2,489.75 : x
  2. Step 2: Convert to fraction form
    6,389.90/9,581.06 = 2,489.75/x
  3. Step 3: Cross multiply
    6,389.90x = 9,581.06 × 2,489.75
  4. Step 4: Simplify right side
    6,389.90x = 23,854,402.45
  5. Step 5: Solve for x
    x = 23,854,402.45/6,389.90
  6. Step 6: Final answer
    x = 3,733.14

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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.