Home / 5,402.31-7,453.08-3,989.40

Finding the Fourth Proportional to 5,402.31, 7,453.08 and 3,989.40

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Solution

The fourth proportional to 5,402.31, 7,453.08 and 3,989.40 is: 5,503.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,402.31 : 7,453.08 = 3,989.40 : x
  2. Step 2: Convert to fraction form
    5,402.31/7,453.08 = 3,989.40/x
  3. Step 3: Cross multiply
    5,402.31x = 7,453.08 × 3,989.40
  4. Step 4: Simplify right side
    5,402.31x = 29,733,317.35
  5. Step 5: Solve for x
    x = 29,733,317.35/5,402.31
  6. Step 6: Final answer
    x = 5,503.82

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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.