Home / 1,256.24-1,874.26-1,236.80

Finding the Fourth Proportional to 1,256.24, 1,874.26 and 1,236.80

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Solution

The fourth proportional to 1,256.24, 1,874.26 and 1,236.80 is: 1,845.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256.24 : 1,874.26 = 1,236.80 : x
  2. Step 2: Convert to fraction form
    1,256.24/1,874.26 = 1,236.80/x
  3. Step 3: Cross multiply
    1,256.24x = 1,874.26 × 1,236.80
  4. Step 4: Simplify right side
    1,256.24x = 2,318,084.77
  5. Step 5: Solve for x
    x = 2,318,084.77/1,256.24
  6. Step 6: Final answer
    x = 1,845.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.