Home / 7,687.36-11,532.40-2,689.46

Finding the Fourth Proportional to 7,687.36, 11,532.40 and 2,689.46

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Solution

The fourth proportional to 7,687.36, 11,532.40 and 2,689.46 is: 4,034.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,687.36 : 11,532.40 = 2,689.46 : x
  2. Step 2: Convert to fraction form
    7,687.36/11,532.40 = 2,689.46/x
  3. Step 3: Cross multiply
    7,687.36x = 11,532.40 × 2,689.46
  4. Step 4: Simplify right side
    7,687.36x = 31,015,928.50
  5. Step 5: Solve for x
    x = 31,015,928.50/7,687.36
  6. Step 6: Final answer
    x = 4,034.67

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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.