Home / 3,960.12-5,465.16-2,281.79

Finding the Fourth Proportional to 3,960.12, 5,465.16 and 2,281.79

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Solution

The fourth proportional to 3,960.12, 5,465.16 and 2,281.79 is: 3,148.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.12 : 5,465.16 = 2,281.79 : x
  2. Step 2: Convert to fraction form
    3,960.12/5,465.16 = 2,281.79/x
  3. Step 3: Cross multiply
    3,960.12x = 5,465.16 × 2,281.79
  4. Step 4: Simplify right side
    3,960.12x = 12,470,347.44
  5. Step 5: Solve for x
    x = 12,470,347.44/3,960.12
  6. Step 6: Final answer
    x = 3,148.98

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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.