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Finding the Fourth Proportional to 5,403.80, 7,435.77 and 5,369.78

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Solution

The fourth proportional to 5,403.80, 7,435.77 and 5,369.78 is: 7,388.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,403.80 : 7,435.77 = 5,369.78 : x
  2. Step 2: Convert to fraction form
    5,403.80/7,435.77 = 5,369.78/x
  3. Step 3: Cross multiply
    5,403.80x = 7,435.77 × 5,369.78
  4. Step 4: Simplify right side
    5,403.80x = 39,928,447.48
  5. Step 5: Solve for x
    x = 39,928,447.48/5,403.80
  6. Step 6: Final answer
    x = 7,388.95

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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.