Home / 3,960.36-5,465.87-2,281.44

Finding the Fourth Proportional to 3,960.36, 5,465.87 and 2,281.44

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Solution

The fourth proportional to 3,960.36, 5,465.87 and 2,281.44 is: 3,148.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.36 : 5,465.87 = 2,281.44 : x
  2. Step 2: Convert to fraction form
    3,960.36/5,465.87 = 2,281.44/x
  3. Step 3: Cross multiply
    3,960.36x = 5,465.87 × 2,281.44
  4. Step 4: Simplify right side
    3,960.36x = 12,470,060.16
  5. Step 5: Solve for x
    x = 12,470,060.16/3,960.36
  6. Step 6: Final answer
    x = 3,148.72

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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.