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Finding the Fourth Proportional to 4,934.12, 7,401.16 and 1,647.21

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Solution

The fourth proportional to 4,934.12, 7,401.16 and 1,647.21 is: 2,470.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,934.12 : 7,401.16 = 1,647.21 : x
  2. Step 2: Convert to fraction form
    4,934.12/7,401.16 = 1,647.21/x
  3. Step 3: Cross multiply
    4,934.12x = 7,401.16 × 1,647.21
  4. Step 4: Simplify right side
    4,934.12x = 12,191,264.76
  5. Step 5: Solve for x
    x = 12,191,264.76/4,934.12
  6. Step 6: Final answer
    x = 2,470.81

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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.