Home / 2,578.46-3,865.64-1,116.58

Finding the Fourth Proportional to 2,578.46, 3,865.64 and 1,116.58

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Solution

The fourth proportional to 2,578.46, 3,865.64 and 1,116.58 is: 1,673.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.46 : 3,865.64 = 1,116.58 : x
  2. Step 2: Convert to fraction form
    2,578.46/3,865.64 = 1,116.58/x
  3. Step 3: Cross multiply
    2,578.46x = 3,865.64 × 1,116.58
  4. Step 4: Simplify right side
    2,578.46x = 4,316,296.31
  5. Step 5: Solve for x
    x = 4,316,296.31/2,578.46
  6. Step 6: Final answer
    x = 1,673.98

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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.