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Finding the Fourth Proportional to 11,800.64, 17,700.92 and 3,486.49

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Solution

The fourth proportional to 11,800.64, 17,700.92 and 3,486.49 is: 5,229.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,800.64 : 17,700.92 = 3,486.49 : x
  2. Step 2: Convert to fraction form
    11,800.64/17,700.92 = 3,486.49/x
  3. Step 3: Cross multiply
    11,800.64x = 17,700.92 × 3,486.49
  4. Step 4: Simplify right side
    11,800.64x = 61,714,045.03
  5. Step 5: Solve for x
    x = 61,714,045.03/11,800.64
  6. Step 6: Final answer
    x = 5,229.72

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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.