Home / 3,974.76-5,485.68-2,403.72

Finding the Fourth Proportional to 3,974.76, 5,485.68 and 2,403.72

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Solution

The fourth proportional to 3,974.76, 5,485.68 and 2,403.72 is: 3,317.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,974.76 : 5,485.68 = 2,403.72 : x
  2. Step 2: Convert to fraction form
    3,974.76/5,485.68 = 2,403.72/x
  3. Step 3: Cross multiply
    3,974.76x = 5,485.68 × 2,403.72
  4. Step 4: Simplify right side
    3,974.76x = 13,186,038.73
  5. Step 5: Solve for x
    x = 13,186,038.73/3,974.76
  6. Step 6: Final answer
    x = 3,317.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.