Home / 3,090.76-4,636.13-1,240.56

Finding the Fourth Proportional to 3,090.76, 4,636.13 and 1,240.56

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Solution

The fourth proportional to 3,090.76, 4,636.13 and 1,240.56 is: 1,860.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.76 : 4,636.13 = 1,240.56 : x
  2. Step 2: Convert to fraction form
    3,090.76/4,636.13 = 1,240.56/x
  3. Step 3: Cross multiply
    3,090.76x = 4,636.13 × 1,240.56
  4. Step 4: Simplify right side
    3,090.76x = 5,751,397.43
  5. Step 5: Solve for x
    x = 5,751,397.43/3,090.76
  6. Step 6: Final answer
    x = 1,860.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.