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Finding the Fourth Proportional to 5,295.81, 7,943.91 and 1,785.87

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Solution

The fourth proportional to 5,295.81, 7,943.91 and 1,785.87 is: 2,678.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,295.81 : 7,943.91 = 1,785.87 : x
  2. Step 2: Convert to fraction form
    5,295.81/7,943.91 = 1,785.87/x
  3. Step 3: Cross multiply
    5,295.81x = 7,943.91 × 1,785.87
  4. Step 4: Simplify right side
    5,295.81x = 14,186,790.55
  5. Step 5: Solve for x
    x = 14,186,790.55/5,295.81
  6. Step 6: Final answer
    x = 2,678.87

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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.