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Finding the Fourth Proportional to 5,543, 8,315.04 and 1,439

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Solution

The fourth proportional to 5,543, 8,315.04 and 1,439 is: 2,158.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,543 : 8,315.04 = 1,439 : x
  2. Step 2: Convert to fraction form
    5,543/8,315.04 = 1,439/x
  3. Step 3: Cross multiply
    5,543x = 8,315.04 × 1,439
  4. Step 4: Simplify right side
    5,543x = 11,965,342.56
  5. Step 5: Solve for x
    x = 11,965,342.56/5,543
  6. Step 6: Final answer
    x = 2,158.64

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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.