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Finding the Fourth Proportional to 5,168.32, 7,752.47 and 1,520.32

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Solution

The fourth proportional to 5,168.32, 7,752.47 and 1,520.32 is: 2,280.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,168.32 : 7,752.47 = 1,520.32 : x
  2. Step 2: Convert to fraction form
    5,168.32/7,752.47 = 1,520.32/x
  3. Step 3: Cross multiply
    5,168.32x = 7,752.47 × 1,520.32
  4. Step 4: Simplify right side
    5,168.32x = 11,786,196.43
  5. Step 5: Solve for x
    x = 11,786,196.43/5,168.32
  6. Step 6: Final answer
    x = 2,280.47

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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.