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Finding the Fourth Proportional to 8,699.51, 13,054.13 and 3,505.79

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Solution

The fourth proportional to 8,699.51, 13,054.13 and 3,505.79 is: 5,260.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,699.51 : 13,054.13 = 3,505.79 : x
  2. Step 2: Convert to fraction form
    8,699.51/13,054.13 = 3,505.79/x
  3. Step 3: Cross multiply
    8,699.51x = 13,054.13 × 3,505.79
  4. Step 4: Simplify right side
    8,699.51x = 45,765,038.41
  5. Step 5: Solve for x
    x = 45,765,038.41/8,699.51
  6. Step 6: Final answer
    x = 5,260.65

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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.