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Finding the Fourth Proportional to 1,411.57, 2,116.81 and 833.77

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Solution

The fourth proportional to 1,411.57, 2,116.81 and 833.77 is: 1,250.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411.57 : 2,116.81 = 833.77 : x
  2. Step 2: Convert to fraction form
    1,411.57/2,116.81 = 833.77/x
  3. Step 3: Cross multiply
    1,411.57x = 2,116.81 × 833.77
  4. Step 4: Simplify right side
    1,411.57x = 1,764,932.67
  5. Step 5: Solve for x
    x = 1,764,932.67/1,411.57
  6. Step 6: Final answer
    x = 1,250.33

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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.