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Finding the Fourth Proportional to 6,365.90, 8,781.81 and 5,525.48

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Solution

The fourth proportional to 6,365.90, 8,781.81 and 5,525.48 is: 7,622.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,365.90 : 8,781.81 = 5,525.48 : x
  2. Step 2: Convert to fraction form
    6,365.90/8,781.81 = 5,525.48/x
  3. Step 3: Cross multiply
    6,365.90x = 8,781.81 × 5,525.48
  4. Step 4: Simplify right side
    6,365.90x = 48,523,715.52
  5. Step 5: Solve for x
    x = 48,523,715.52/6,365.90
  6. Step 6: Final answer
    x = 7,622.44

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1.5x scale

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.