Home / 3,281.10-4,920.45-1,089.90

Finding the Fourth Proportional to 3,281.10, 4,920.45 and 1,089.90

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Solution

The fourth proportional to 3,281.10, 4,920.45 and 1,089.90 is: 1,634.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.10 : 4,920.45 = 1,089.90 : x
  2. Step 2: Convert to fraction form
    3,281.10/4,920.45 = 1,089.90/x
  3. Step 3: Cross multiply
    3,281.10x = 4,920.45 × 1,089.90
  4. Step 4: Simplify right side
    3,281.10x = 5,362,798.46
  5. Step 5: Solve for x
    x = 5,362,798.46/3,281.10
  6. Step 6: Final answer
    x = 1,634.45

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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.