Home / 1,256.60-1,883.28-845.12

Finding the Fourth Proportional to 1,256.60, 1,883.28 and 845.12

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Solution

The fourth proportional to 1,256.60, 1,883.28 and 845.12 is: 1,266.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256.60 : 1,883.28 = 845.12 : x
  2. Step 2: Convert to fraction form
    1,256.60/1,883.28 = 845.12/x
  3. Step 3: Cross multiply
    1,256.60x = 1,883.28 × 845.12
  4. Step 4: Simplify right side
    1,256.60x = 1,591,597.59
  5. Step 5: Solve for x
    x = 1,591,597.59/1,256.60
  6. Step 6: Final answer
    x = 1,266.59

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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.