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Finding the Fourth Proportional to 5,453.55, 8,179.34 and 1,557

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Solution

The fourth proportional to 5,453.55, 8,179.34 and 1,557 is: 2,335.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,453.55 : 8,179.34 = 1,557 : x
  2. Step 2: Convert to fraction form
    5,453.55/8,179.34 = 1,557/x
  3. Step 3: Cross multiply
    5,453.55x = 8,179.34 × 1,557
  4. Step 4: Simplify right side
    5,453.55x = 12,735,224.60
  5. Step 5: Solve for x
    x = 12,735,224.60/5,453.55
  6. Step 6: Final answer
    x = 2,335.22

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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.