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Finding the Fourth Proportional to 5,729.88, 7,911 and 4,401.18

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Solution

The fourth proportional to 5,729.88, 7,911 and 4,401.18 is: 6,076.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,729.88 : 7,911 = 4,401.18 : x
  2. Step 2: Convert to fraction form
    5,729.88/7,911 = 4,401.18/x
  3. Step 3: Cross multiply
    5,729.88x = 7,911 × 4,401.18
  4. Step 4: Simplify right side
    5,729.88x = 34,817,734.98
  5. Step 5: Solve for x
    x = 34,817,734.98/5,729.88
  6. Step 6: Final answer
    x = 6,076.52

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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.