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Finding the Fourth Proportional to 3,041.86, 4,562.13 and 820.63

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Solution

The fourth proportional to 3,041.86, 4,562.13 and 820.63 is: 1,230.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,041.86 : 4,562.13 = 820.63 : x
  2. Step 2: Convert to fraction form
    3,041.86/4,562.13 = 820.63/x
  3. Step 3: Cross multiply
    3,041.86x = 4,562.13 × 820.63
  4. Step 4: Simplify right side
    3,041.86x = 3,743,820.74
  5. Step 5: Solve for x
    x = 3,743,820.74/3,041.86
  6. Step 6: Final answer
    x = 1,230.77

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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.