Home / 7,638.13-11,451.32-3,687.36

Finding the Fourth Proportional to 7,638.13, 11,451.32 and 3,687.36

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Solution

The fourth proportional to 7,638.13, 11,451.32 and 3,687.36 is: 5,528.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,638.13 : 11,451.32 = 3,687.36 : x
  2. Step 2: Convert to fraction form
    7,638.13/11,451.32 = 3,687.36/x
  3. Step 3: Cross multiply
    7,638.13x = 11,451.32 × 3,687.36
  4. Step 4: Simplify right side
    7,638.13x = 42,225,139.32
  5. Step 5: Solve for x
    x = 42,225,139.32/7,638.13
  6. Step 6: Final answer
    x = 5,528.20

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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.