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Finding the Fourth Proportional to 7,711.19, 11,555.19 and 5,953.55

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Solution

The fourth proportional to 7,711.19, 11,555.19 and 5,953.55 is: 8,921.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,711.19 : 11,555.19 = 5,953.55 : x
  2. Step 2: Convert to fraction form
    7,711.19/11,555.19 = 5,953.55/x
  3. Step 3: Cross multiply
    7,711.19x = 11,555.19 × 5,953.55
  4. Step 4: Simplify right side
    7,711.19x = 68,794,343.65
  5. Step 5: Solve for x
    x = 68,794,343.65/7,711.19
  6. Step 6: Final answer
    x = 8,921.37

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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.