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Finding the Fourth Proportional to 1,720.62, 2,376.21 and 1,195.74

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Solution

The fourth proportional to 1,720.62, 2,376.21 and 1,195.74 is: 1,651.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.62 : 2,376.21 = 1,195.74 : x
  2. Step 2: Convert to fraction form
    1,720.62/2,376.21 = 1,195.74/x
  3. Step 3: Cross multiply
    1,720.62x = 2,376.21 × 1,195.74
  4. Step 4: Simplify right side
    1,720.62x = 2,841,329.35
  5. Step 5: Solve for x
    x = 2,841,329.35/1,720.62
  6. Step 6: Final answer
    x = 1,651.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.