Home / 3,580.78-5,371.18-1,115.68

Finding the Fourth Proportional to 3,580.78, 5,371.18 and 1,115.68

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Solution

The fourth proportional to 3,580.78, 5,371.18 and 1,115.68 is: 1,673.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,580.78 : 5,371.18 = 1,115.68 : x
  2. Step 2: Convert to fraction form
    3,580.78/5,371.18 = 1,115.68/x
  3. Step 3: Cross multiply
    3,580.78x = 5,371.18 × 1,115.68
  4. Step 4: Simplify right side
    3,580.78x = 5,992,518.10
  5. Step 5: Solve for x
    x = 5,992,518.10/3,580.78
  6. Step 6: Final answer
    x = 1,673.52

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1.5x scale

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.