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Finding the Fourth Proportional to 6,305.28, 8,690.40 and 4,730.64

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Solution

The fourth proportional to 6,305.28, 8,690.40 and 4,730.64 is: 6,520.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,305.28 : 8,690.40 = 4,730.64 : x
  2. Step 2: Convert to fraction form
    6,305.28/8,690.40 = 4,730.64/x
  3. Step 3: Cross multiply
    6,305.28x = 8,690.40 × 4,730.64
  4. Step 4: Simplify right side
    6,305.28x = 41,111,153.86
  5. Step 5: Solve for x
    x = 41,111,153.86/6,305.28
  6. Step 6: Final answer
    x = 6,520.12

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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.