Home / 9,420.89-14,135.91-3,875.90

Finding the Fourth Proportional to 9,420.89, 14,135.91 and 3,875.90

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Solution

The fourth proportional to 9,420.89, 14,135.91 and 3,875.90 is: 5,815.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420.89 : 14,135.91 = 3,875.90 : x
  2. Step 2: Convert to fraction form
    9,420.89/14,135.91 = 3,875.90/x
  3. Step 3: Cross multiply
    9,420.89x = 14,135.91 × 3,875.90
  4. Step 4: Simplify right side
    9,420.89x = 54,789,373.57
  5. Step 5: Solve for x
    x = 54,789,373.57/9,420.89
  6. Step 6: Final answer
    x = 5,815.73

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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.