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Finding the Fourth Proportional to 1,763.96, 2,645.87 and 723.69

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Solution

The fourth proportional to 1,763.96, 2,645.87 and 723.69 is: 1,085.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,763.96 : 2,645.87 = 723.69 : x
  2. Step 2: Convert to fraction form
    1,763.96/2,645.87 = 723.69/x
  3. Step 3: Cross multiply
    1,763.96x = 2,645.87 × 723.69
  4. Step 4: Simplify right side
    1,763.96x = 1,914,792.15
  5. Step 5: Solve for x
    x = 1,914,792.15/1,763.96
  6. Step 6: Final answer
    x = 1,085.51

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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.