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Finding the Fourth Proportional to 8,700.31, 13,039.29 and 3,953.00

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Solution

The fourth proportional to 8,700.31, 13,039.29 and 3,953.00 is: 5,924.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.31 : 13,039.29 = 3,953.00 : x
  2. Step 2: Convert to fraction form
    8,700.31/13,039.29 = 3,953.00/x
  3. Step 3: Cross multiply
    8,700.31x = 13,039.29 × 3,953.00
  4. Step 4: Simplify right side
    8,700.31x = 51,544,345.97
  5. Step 5: Solve for x
    x = 51,544,345.97/8,700.31
  6. Step 6: Final answer
    x = 5,924.43

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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.