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Finding the Fourth Proportional to 1,766.16, 2,630.16 and 1,720.80

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Solution

The fourth proportional to 1,766.16, 2,630.16 and 1,720.80 is: 2,562.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,766.16 : 2,630.16 = 1,720.80 : x
  2. Step 2: Convert to fraction form
    1,766.16/2,630.16 = 1,720.80/x
  3. Step 3: Cross multiply
    1,766.16x = 2,630.16 × 1,720.80
  4. Step 4: Simplify right side
    1,766.16x = 4,525,979.33
  5. Step 5: Solve for x
    x = 4,525,979.33/1,766.16
  6. Step 6: Final answer
    x = 2,562.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.