Home / 3,520.96-5,280.02-1,328.49

Finding the Fourth Proportional to 3,520.96, 5,280.02 and 1,328.49

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Solution

The fourth proportional to 3,520.96, 5,280.02 and 1,328.49 is: 1,992.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.96 : 5,280.02 = 1,328.49 : x
  2. Step 2: Convert to fraction form
    3,520.96/5,280.02 = 1,328.49/x
  3. Step 3: Cross multiply
    3,520.96x = 5,280.02 × 1,328.49
  4. Step 4: Simplify right side
    3,520.96x = 7,014,447.13
  5. Step 5: Solve for x
    x = 7,014,447.13/3,520.96
  6. Step 6: Final answer
    x = 1,992.20

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Double scale
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1.5x scale

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.