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Finding the Fourth Proportional to 6,345.50, 8,754.66 and 3,690.74

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Solution

The fourth proportional to 6,345.50, 8,754.66 and 3,690.74 is: 5,091.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,345.50 : 8,754.66 = 3,690.74 : x
  2. Step 2: Convert to fraction form
    6,345.50/8,754.66 = 3,690.74/x
  3. Step 3: Cross multiply
    6,345.50x = 8,754.66 × 3,690.74
  4. Step 4: Simplify right side
    6,345.50x = 32,311,173.85
  5. Step 5: Solve for x
    x = 32,311,173.85/6,345.50
  6. Step 6: Final answer
    x = 5,091.98

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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.