Home / 3,130.24-4,310.40-2,687.44

Finding the Fourth Proportional to 3,130.24, 4,310.40 and 2,687.44

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Solution

The fourth proportional to 3,130.24, 4,310.40 and 2,687.44 is: 3,700.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.24 : 4,310.40 = 2,687.44 : x
  2. Step 2: Convert to fraction form
    3,130.24/4,310.40 = 2,687.44/x
  3. Step 3: Cross multiply
    3,130.24x = 4,310.40 × 2,687.44
  4. Step 4: Simplify right side
    3,130.24x = 11,583,941.38
  5. Step 5: Solve for x
    x = 11,583,941.38/3,130.24
  6. Step 6: Final answer
    x = 3,700.66

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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.