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Finding the Fourth Proportional to 8,459.70, 12,681.81 and 3,261.66

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Solution

The fourth proportional to 8,459.70, 12,681.81 and 3,261.66 is: 4,889.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,459.70 : 12,681.81 = 3,261.66 : x
  2. Step 2: Convert to fraction form
    8,459.70/12,681.81 = 3,261.66/x
  3. Step 3: Cross multiply
    8,459.70x = 12,681.81 × 3,261.66
  4. Step 4: Simplify right side
    8,459.70x = 41,363,752.40
  5. Step 5: Solve for x
    x = 41,363,752.40/8,459.70
  6. Step 6: Final answer
    x = 4,889.51

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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.