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Finding the Fourth Proportional to 5,531.88, 7,636.80 and 3,644.70

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Solution

The fourth proportional to 5,531.88, 7,636.80 and 3,644.70 is: 5,031.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,531.88 : 7,636.80 = 3,644.70 : x
  2. Step 2: Convert to fraction form
    5,531.88/7,636.80 = 3,644.70/x
  3. Step 3: Cross multiply
    5,531.88x = 7,636.80 × 3,644.70
  4. Step 4: Simplify right side
    5,531.88x = 27,833,844.96
  5. Step 5: Solve for x
    x = 27,833,844.96/5,531.88
  6. Step 6: Final answer
    x = 5,031.53

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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.