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Finding the Fourth Proportional to 8,590.69, 12,888.42 and 2,747.76

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Solution

The fourth proportional to 8,590.69, 12,888.42 and 2,747.76 is: 4,122.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,590.69 : 12,888.42 = 2,747.76 : x
  2. Step 2: Convert to fraction form
    8,590.69/12,888.42 = 2,747.76/x
  3. Step 3: Cross multiply
    8,590.69x = 12,888.42 × 2,747.76
  4. Step 4: Simplify right side
    8,590.69x = 35,414,284.94
  5. Step 5: Solve for x
    x = 35,414,284.94/8,590.69
  6. Step 6: Final answer
    x = 4,122.40

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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.