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Finding the Fourth Proportional to 1,250.96, 1,874.64 and 919.29

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Solution

The fourth proportional to 1,250.96, 1,874.64 and 919.29 is: 1,377.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,250.96 : 1,874.64 = 919.29 : x
  2. Step 2: Convert to fraction form
    1,250.96/1,874.64 = 919.29/x
  3. Step 3: Cross multiply
    1,250.96x = 1,874.64 × 919.29
  4. Step 4: Simplify right side
    1,250.96x = 1,723,337.81
  5. Step 5: Solve for x
    x = 1,723,337.81/1,250.96
  6. Step 6: Final answer
    x = 1,377.61

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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.