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Finding the Fourth Proportional to 4,293.64, 6,440.22 and 1,520.20

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Solution

The fourth proportional to 4,293.64, 6,440.22 and 1,520.20 is: 2,280.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,293.64 : 6,440.22 = 1,520.20 : x
  2. Step 2: Convert to fraction form
    4,293.64/6,440.22 = 1,520.20/x
  3. Step 3: Cross multiply
    4,293.64x = 6,440.22 × 1,520.20
  4. Step 4: Simplify right side
    4,293.64x = 9,790,422.44
  5. Step 5: Solve for x
    x = 9,790,422.44/4,293.64
  6. Step 6: Final answer
    x = 2,280.22

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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.