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Finding the Fourth Proportional to 7,672.70, 11,510.36 and 2,406.70

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Solution

The fourth proportional to 7,672.70, 11,510.36 and 2,406.70 is: 3,610.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,672.70 : 11,510.36 = 2,406.70 : x
  2. Step 2: Convert to fraction form
    7,672.70/11,510.36 = 2,406.70/x
  3. Step 3: Cross multiply
    7,672.70x = 11,510.36 × 2,406.70
  4. Step 4: Simplify right side
    7,672.70x = 27,701,960.65
  5. Step 5: Solve for x
    x = 27,701,960.65/7,672.70
  6. Step 6: Final answer
    x = 3,610.46

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1.5x scale

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.