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Finding the Fourth Proportional to 5,491.97, 7,580.28 and 3,135.48

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Solution

The fourth proportional to 5,491.97, 7,580.28 and 3,135.48 is: 4,327.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,491.97 : 7,580.28 = 3,135.48 : x
  2. Step 2: Convert to fraction form
    5,491.97/7,580.28 = 3,135.48/x
  3. Step 3: Cross multiply
    5,491.97x = 7,580.28 × 3,135.48
  4. Step 4: Simplify right side
    5,491.97x = 23,767,799.67
  5. Step 5: Solve for x
    x = 23,767,799.67/5,491.97
  6. Step 6: Final answer
    x = 4,327.74

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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.