Home / 2,457.78-3,683.68-1,139.74

Finding the Fourth Proportional to 2,457.78, 3,683.68 and 1,139.74

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Solution

The fourth proportional to 2,457.78, 3,683.68 and 1,139.74 is: 1,708.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,457.78 : 3,683.68 = 1,139.74 : x
  2. Step 2: Convert to fraction form
    2,457.78/3,683.68 = 1,139.74/x
  3. Step 3: Cross multiply
    2,457.78x = 3,683.68 × 1,139.74
  4. Step 4: Simplify right side
    2,457.78x = 4,198,425.38
  5. Step 5: Solve for x
    x = 4,198,425.38/2,457.78
  6. Step 6: Final answer
    x = 1,708.22

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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.