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Finding the Fourth Proportional to 4,376, 6,555.72 and 3,390.52

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Solution

The fourth proportional to 4,376, 6,555.72 and 3,390.52 is: 5,079.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,376 : 6,555.72 = 3,390.52 : x
  2. Step 2: Convert to fraction form
    4,376/6,555.72 = 3,390.52/x
  3. Step 3: Cross multiply
    4,376x = 6,555.72 × 3,390.52
  4. Step 4: Simplify right side
    4,376x = 22,227,299.77
  5. Step 5: Solve for x
    x = 22,227,299.77/4,376
  6. Step 6: Final answer
    x = 5,079.36

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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.