Home / 1,256.45-1,874.47-1,188.41

Finding the Fourth Proportional to 1,256.45, 1,874.47 and 1,188.41

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Solution

The fourth proportional to 1,256.45, 1,874.47 and 1,188.41 is: 1,772.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256.45 : 1,874.47 = 1,188.41 : x
  2. Step 2: Convert to fraction form
    1,256.45/1,874.47 = 1,188.41/x
  3. Step 3: Cross multiply
    1,256.45x = 1,874.47 × 1,188.41
  4. Step 4: Simplify right side
    1,256.45x = 2,227,634.21
  5. Step 5: Solve for x
    x = 2,227,634.21/1,256.45
  6. Step 6: Final answer
    x = 1,772.96

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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.