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Finding the Fourth Proportional to 4,674.08, 7,011.20 and 1,211.20

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Solution

The fourth proportional to 4,674.08, 7,011.20 and 1,211.20 is: 1,816.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,674.08 : 7,011.20 = 1,211.20 : x
  2. Step 2: Convert to fraction form
    4,674.08/7,011.20 = 1,211.20/x
  3. Step 3: Cross multiply
    4,674.08x = 7,011.20 × 1,211.20
  4. Step 4: Simplify right side
    4,674.08x = 8,491,965.44
  5. Step 5: Solve for x
    x = 8,491,965.44/4,674.08
  6. Step 6: Final answer
    x = 1,816.82

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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.