Home / 3,280.15-4,920.81-1,089.01

Finding the Fourth Proportional to 3,280.15, 4,920.81 and 1,089.01

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Solution

The fourth proportional to 3,280.15, 4,920.81 and 1,089.01 is: 1,633.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.15 : 4,920.81 = 1,089.01 : x
  2. Step 2: Convert to fraction form
    3,280.15/4,920.81 = 1,089.01/x
  3. Step 3: Cross multiply
    3,280.15x = 4,920.81 × 1,089.01
  4. Step 4: Simplify right side
    3,280.15x = 5,358,811.30
  5. Step 5: Solve for x
    x = 5,358,811.30/3,280.15
  6. Step 6: Final answer
    x = 1,633.71

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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.