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Finding the Fourth Proportional to 3,520.08, 5,280.12 and 1,440.12

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Solution

The fourth proportional to 3,520.08, 5,280.12 and 1,440.12 is: 2,160.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.08 : 5,280.12 = 1,440.12 : x
  2. Step 2: Convert to fraction form
    3,520.08/5,280.12 = 1,440.12/x
  3. Step 3: Cross multiply
    3,520.08x = 5,280.12 × 1,440.12
  4. Step 4: Simplify right side
    3,520.08x = 7,604,006.41
  5. Step 5: Solve for x
    x = 7,604,006.41/3,520.08
  6. Step 6: Final answer
    x = 2,160.18

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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.