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Finding the Fourth Proportional to 5,402.55, 7,455.52 and 2,918.55

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Solution

The fourth proportional to 5,402.55, 7,455.52 and 2,918.55 is: 4,027.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,402.55 : 7,455.52 = 2,918.55 : x
  2. Step 2: Convert to fraction form
    5,402.55/7,455.52 = 2,918.55/x
  3. Step 3: Cross multiply
    5,402.55x = 7,455.52 × 2,918.55
  4. Step 4: Simplify right side
    5,402.55x = 21,759,307.90
  5. Step 5: Solve for x
    x = 21,759,307.90/5,402.55
  6. Step 6: Final answer
    x = 4,027.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.