Home / 3,090.10-4,021.45-3,090.10

Finding the Fourth Proportional to 3,090.10, 4,021.45 and 3,090.10

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Solution

The fourth proportional to 3,090.10, 4,021.45 and 3,090.10 is: 4,021.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.10 : 4,021.45 = 3,090.10 : x
  2. Step 2: Convert to fraction form
    3,090.10/4,021.45 = 3,090.10/x
  3. Step 3: Cross multiply
    3,090.10x = 4,021.45 × 3,090.10
  4. Step 4: Simplify right side
    3,090.10x = 12,426,682.65
  5. Step 5: Solve for x
    x = 12,426,682.65/3,090.10
  6. Step 6: Final answer
    x = 4,021.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.