Home / 3,131.55-4,311.71-2,658.51

Finding the Fourth Proportional to 3,131.55, 4,311.71 and 2,658.51

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Solution

The fourth proportional to 3,131.55, 4,311.71 and 2,658.51 is: 3,660.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.55 : 4,311.71 = 2,658.51 : x
  2. Step 2: Convert to fraction form
    3,131.55/4,311.71 = 2,658.51/x
  3. Step 3: Cross multiply
    3,131.55x = 4,311.71 × 2,658.51
  4. Step 4: Simplify right side
    3,131.55x = 11,462,710.86
  5. Step 5: Solve for x
    x = 11,462,710.86/3,131.55
  6. Step 6: Final answer
    x = 3,660.40

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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.