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Finding the Fourth Proportional to 5,751.74, 8,627.42 and 1,856

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Solution

The fourth proportional to 5,751.74, 8,627.42 and 1,856 is: 2,783.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,751.74 : 8,627.42 = 1,856 : x
  2. Step 2: Convert to fraction form
    5,751.74/8,627.42 = 1,856/x
  3. Step 3: Cross multiply
    5,751.74x = 8,627.42 × 1,856
  4. Step 4: Simplify right side
    5,751.74x = 16,012,491.52
  5. Step 5: Solve for x
    x = 16,012,491.52/5,751.74
  6. Step 6: Final answer
    x = 2,783.94

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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.