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Finding the Fourth Proportional to 2,461.76, 3,686.88 and 2,169.92

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Solution

The fourth proportional to 2,461.76, 3,686.88 and 2,169.92 is: 3,249.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,461.76 : 3,686.88 = 2,169.92 : x
  2. Step 2: Convert to fraction form
    2,461.76/3,686.88 = 2,169.92/x
  3. Step 3: Cross multiply
    2,461.76x = 3,686.88 × 2,169.92
  4. Step 4: Simplify right side
    2,461.76x = 8,000,234.65
  5. Step 5: Solve for x
    x = 8,000,234.65/2,461.76
  6. Step 6: Final answer
    x = 3,249.80

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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.