Home / 3,280.26-4,920.80-1,088.40

Finding the Fourth Proportional to 3,280.26, 4,920.80 and 1,088.40

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Solution

The fourth proportional to 3,280.26, 4,920.80 and 1,088.40 is: 1,632.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.26 : 4,920.80 = 1,088.40 : x
  2. Step 2: Convert to fraction form
    3,280.26/4,920.80 = 1,088.40/x
  3. Step 3: Cross multiply
    3,280.26x = 4,920.80 × 1,088.40
  4. Step 4: Simplify right side
    3,280.26x = 5,355,798.72
  5. Step 5: Solve for x
    x = 5,355,798.72/3,280.26
  6. Step 6: Final answer
    x = 1,632.74

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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.