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Finding the Fourth Proportional to 12,760.86, 19,141.65 and 3,526.86

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Solution

The fourth proportional to 12,760.86, 19,141.65 and 3,526.86 is: 5,290.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,760.86 : 19,141.65 = 3,526.86 : x
  2. Step 2: Convert to fraction form
    12,760.86/19,141.65 = 3,526.86/x
  3. Step 3: Cross multiply
    12,760.86x = 19,141.65 × 3,526.86
  4. Step 4: Simplify right side
    12,760.86x = 67,509,919.72
  5. Step 5: Solve for x
    x = 67,509,919.72/12,760.86
  6. Step 6: Final answer
    x = 5,290.39

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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.