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Finding the Fourth Proportional to 8,459, 12,688.38 and 3,264.76

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Solution

The fourth proportional to 8,459, 12,688.38 and 3,264.76 is: 4,897.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,459 : 12,688.38 = 3,264.76 : x
  2. Step 2: Convert to fraction form
    8,459/12,688.38 = 3,264.76/x
  3. Step 3: Cross multiply
    8,459x = 12,688.38 × 3,264.76
  4. Step 4: Simplify right side
    8,459x = 41,424,515.49
  5. Step 5: Solve for x
    x = 41,424,515.49/8,459
  6. Step 6: Final answer
    x = 4,897.09

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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.