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Finding the Fourth Proportional to 8,489.47, 11,714.13 and 4,855.45

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Solution

The fourth proportional to 8,489.47, 11,714.13 and 4,855.45 is: 6,699.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,489.47 : 11,714.13 = 4,855.45 : x
  2. Step 2: Convert to fraction form
    8,489.47/11,714.13 = 4,855.45/x
  3. Step 3: Cross multiply
    8,489.47x = 11,714.13 × 4,855.45
  4. Step 4: Simplify right side
    8,489.47x = 56,877,372.51
  5. Step 5: Solve for x
    x = 56,877,372.51/8,489.47
  6. Step 6: Final answer
    x = 6,699.76

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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.