Home / 3,520.16-5,280.48-1,328.96

Finding the Fourth Proportional to 3,520.16, 5,280.48 and 1,328.96

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Solution

The fourth proportional to 3,520.16, 5,280.48 and 1,328.96 is: 1,993.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.16 : 5,280.48 = 1,328.96 : x
  2. Step 2: Convert to fraction form
    3,520.16/5,280.48 = 1,328.96/x
  3. Step 3: Cross multiply
    3,520.16x = 5,280.48 × 1,328.96
  4. Step 4: Simplify right side
    3,520.16x = 7,017,546.70
  5. Step 5: Solve for x
    x = 7,017,546.70/3,520.16
  6. Step 6: Final answer
    x = 1,993.53

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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.