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Finding the Fourth Proportional to 3,090.31, 4,265.99 and 1,972.71

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Solution

The fourth proportional to 3,090.31, 4,265.99 and 1,972.71 is: 2,723.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090.31 : 4,265.99 = 1,972.71 : x
  2. Step 2: Convert to fraction form
    3,090.31/4,265.99 = 1,972.71/x
  3. Step 3: Cross multiply
    3,090.31x = 4,265.99 × 1,972.71
  4. Step 4: Simplify right side
    3,090.31x = 8,415,561.13
  5. Step 5: Solve for x
    x = 8,415,561.13/3,090.31
  6. Step 6: Final answer
    x = 2,723.21

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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.