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Finding the Fourth Proportional to 3,474.88, 5,212.35 and 877.82

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Solution

The fourth proportional to 3,474.88, 5,212.35 and 877.82 is: 1,316.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,474.88 : 5,212.35 = 877.82 : x
  2. Step 2: Convert to fraction form
    3,474.88/5,212.35 = 877.82/x
  3. Step 3: Cross multiply
    3,474.88x = 5,212.35 × 877.82
  4. Step 4: Simplify right side
    3,474.88x = 4,575,479.02
  5. Step 5: Solve for x
    x = 4,575,479.02/3,474.88
  6. Step 6: Final answer
    x = 1,316.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.