Home / 2,966.24-4,090.64-2,131.08

Finding the Fourth Proportional to 2,966.24, 4,090.64 and 2,131.08

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Solution

The fourth proportional to 2,966.24, 4,090.64 and 2,131.08 is: 2,938.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,966.24 : 4,090.64 = 2,131.08 : x
  2. Step 2: Convert to fraction form
    2,966.24/4,090.64 = 2,131.08/x
  3. Step 3: Cross multiply
    2,966.24x = 4,090.64 × 2,131.08
  4. Step 4: Simplify right side
    2,966.24x = 8,717,470.44
  5. Step 5: Solve for x
    x = 8,717,470.44/2,966.24
  6. Step 6: Final answer
    x = 2,938.90

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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.