Home / 3,520.34-5,280.94-1,645.28

Finding the Fourth Proportional to 3,520.34, 5,280.94 and 1,645.28

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Solution

The fourth proportional to 3,520.34, 5,280.94 and 1,645.28 is: 2,468.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.34 : 5,280.94 = 1,645.28 : x
  2. Step 2: Convert to fraction form
    3,520.34/5,280.94 = 1,645.28/x
  3. Step 3: Cross multiply
    3,520.34x = 5,280.94 × 1,645.28
  4. Step 4: Simplify right side
    3,520.34x = 8,688,624.96
  5. Step 5: Solve for x
    x = 8,688,624.96/3,520.34
  6. Step 6: Final answer
    x = 2,468.12

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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.