Home / 1,457.78-2,185.45-1,248.73

Finding the Fourth Proportional to 1,457.78, 2,185.45 and 1,248.73

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Solution

The fourth proportional to 1,457.78, 2,185.45 and 1,248.73 is: 1,872.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,457.78 : 2,185.45 = 1,248.73 : x
  2. Step 2: Convert to fraction form
    1,457.78/2,185.45 = 1,248.73/x
  3. Step 3: Cross multiply
    1,457.78x = 2,185.45 × 1,248.73
  4. Step 4: Simplify right side
    1,457.78x = 2,729,028.39
  5. Step 5: Solve for x
    x = 2,729,028.39/1,457.78
  6. Step 6: Final answer
    x = 1,872.05

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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.