Home / 5,821.20-8,029.80-4,140

Finding the Fourth Proportional to 5,821.20, 8,029.80 and 4,140

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Solution

The fourth proportional to 5,821.20, 8,029.80 and 4,140 is: 5,710.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,821.20 : 8,029.80 = 4,140 : x
  2. Step 2: Convert to fraction form
    5,821.20/8,029.80 = 4,140/x
  3. Step 3: Cross multiply
    5,821.20x = 8,029.80 × 4,140
  4. Step 4: Simplify right side
    5,821.20x = 33,243,372
  5. Step 5: Solve for x
    x = 33,243,372/5,821.20
  6. Step 6: Final answer
    x = 5,710.74

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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.