Home / 5,541.30-8,309.10-1,645.20

Finding the Fourth Proportional to 5,541.30, 8,309.10 and 1,645.20

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Solution

The fourth proportional to 5,541.30, 8,309.10 and 1,645.20 is: 2,466.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,541.30 : 8,309.10 = 1,645.20 : x
  2. Step 2: Convert to fraction form
    5,541.30/8,309.10 = 1,645.20/x
  3. Step 3: Cross multiply
    5,541.30x = 8,309.10 × 1,645.20
  4. Step 4: Simplify right side
    5,541.30x = 13,670,131.32
  5. Step 5: Solve for x
    x = 13,670,131.32/5,541.30
  6. Step 6: Final answer
    x = 2,466.95

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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.