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Finding the Fourth Proportional to 5,275.53, 7,913.71 and 1,765.55

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Solution

The fourth proportional to 5,275.53, 7,913.71 and 1,765.55 is: 2,648.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.53 : 7,913.71 = 1,765.55 : x
  2. Step 2: Convert to fraction form
    5,275.53/7,913.71 = 1,765.55/x
  3. Step 3: Cross multiply
    5,275.53x = 7,913.71 × 1,765.55
  4. Step 4: Simplify right side
    5,275.53x = 13,972,072.68
  5. Step 5: Solve for x
    x = 13,972,072.68/5,275.53
  6. Step 6: Final answer
    x = 2,648.47

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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.