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Finding the Fourth Proportional to 6,480.76, 8,943.90 and 3,648.40

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Solution

The fourth proportional to 6,480.76, 8,943.90 and 3,648.40 is: 5,035.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,480.76 : 8,943.90 = 3,648.40 : x
  2. Step 2: Convert to fraction form
    6,480.76/8,943.90 = 3,648.40/x
  3. Step 3: Cross multiply
    6,480.76x = 8,943.90 × 3,648.40
  4. Step 4: Simplify right side
    6,480.76x = 32,630,861.80
  5. Step 5: Solve for x
    x = 32,630,861.80/6,480.76
  6. Step 6: Final answer
    x = 5,035.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.