Home / 1,427.46-2,149.74-1,256.00

Finding the Fourth Proportional to 1,427.46, 2,149.74 and 1,256.00

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Solution

The fourth proportional to 1,427.46, 2,149.74 and 1,256.00 is: 1,891.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427.46 : 2,149.74 = 1,256.00 : x
  2. Step 2: Convert to fraction form
    1,427.46/2,149.74 = 1,256.00/x
  3. Step 3: Cross multiply
    1,427.46x = 2,149.74 × 1,256.00
  4. Step 4: Simplify right side
    1,427.46x = 2,700,078.81
  5. Step 5: Solve for x
    x = 2,700,078.81/1,427.46
  6. Step 6: Final answer
    x = 1,891.53

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.