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Finding the Fourth Proportional to 1,441.26, 2,160.99 and 711.18

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Solution

The fourth proportional to 1,441.26, 2,160.99 and 711.18 is: 1,066.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,441.26 : 2,160.99 = 711.18 : x
  2. Step 2: Convert to fraction form
    1,441.26/2,160.99 = 711.18/x
  3. Step 3: Cross multiply
    1,441.26x = 2,160.99 × 711.18
  4. Step 4: Simplify right side
    1,441.26x = 1,536,852.87
  5. Step 5: Solve for x
    x = 1,536,852.87/1,441.26
  6. Step 6: Final answer
    x = 1,066.33

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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.