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Finding the Fourth Proportional to 6,614.66, 9,916.78 and 3,280.63

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Solution

The fourth proportional to 6,614.66, 9,916.78 and 3,280.63 is: 4,918.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,614.66 : 9,916.78 = 3,280.63 : x
  2. Step 2: Convert to fraction form
    6,614.66/9,916.78 = 3,280.63/x
  3. Step 3: Cross multiply
    6,614.66x = 9,916.78 × 3,280.63
  4. Step 4: Simplify right side
    6,614.66x = 32,533,285.97
  5. Step 5: Solve for x
    x = 32,533,285.97/6,614.66
  6. Step 6: Final answer
    x = 4,918.36

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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.