Home / 3,090.20-4,635.03-1,358.78

Finding the Fourth Proportional to 3,090.20, 4,635.03 and 1,358.78

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Solution

The fourth proportional to 3,090.20, 4,635.03 and 1,358.78 is: 2,038.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.20 : 4,635.03 = 1,358.78 : x
  2. Step 2: Convert to fraction form
    3,090.20/4,635.03 = 1,358.78/x
  3. Step 3: Cross multiply
    3,090.20x = 4,635.03 × 1,358.78
  4. Step 4: Simplify right side
    3,090.20x = 6,297,986.06
  5. Step 5: Solve for x
    x = 6,297,986.06/3,090.20
  6. Step 6: Final answer
    x = 2,038.05

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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.