Home / 3,130.54-4,320.82-2,012.38

Finding the Fourth Proportional to 3,130.54, 4,320.82 and 2,012.38

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Solution

The fourth proportional to 3,130.54, 4,320.82 and 2,012.38 is: 2,777.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.54 : 4,320.82 = 2,012.38 : x
  2. Step 2: Convert to fraction form
    3,130.54/4,320.82 = 2,012.38/x
  3. Step 3: Cross multiply
    3,130.54x = 4,320.82 × 2,012.38
  4. Step 4: Simplify right side
    3,130.54x = 8,695,131.75
  5. Step 5: Solve for x
    x = 8,695,131.75/3,130.54
  6. Step 6: Final answer
    x = 2,777.52

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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.