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Finding the Fourth Proportional to 6,610.80, 9,916.14 and 1,680.39

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Solution

The fourth proportional to 6,610.80, 9,916.14 and 1,680.39 is: 2,520.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,610.80 : 9,916.14 = 1,680.39 : x
  2. Step 2: Convert to fraction form
    6,610.80/9,916.14 = 1,680.39/x
  3. Step 3: Cross multiply
    6,610.80x = 9,916.14 × 1,680.39
  4. Step 4: Simplify right side
    6,610.80x = 16,662,982.49
  5. Step 5: Solve for x
    x = 16,662,982.49/6,610.80
  6. Step 6: Final answer
    x = 2,520.57

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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.