Home / 3,135.31-4,327.30-2,140.22

Finding the Fourth Proportional to 3,135.31, 4,327.30 and 2,140.22

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Solution

The fourth proportional to 3,135.31, 4,327.30 and 2,140.22 is: 2,953.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.31 : 4,327.30 = 2,140.22 : x
  2. Step 2: Convert to fraction form
    3,135.31/4,327.30 = 2,140.22/x
  3. Step 3: Cross multiply
    3,135.31x = 4,327.30 × 2,140.22
  4. Step 4: Simplify right side
    3,135.31x = 9,261,381.48
  5. Step 5: Solve for x
    x = 9,261,381.48/3,135.31
  6. Step 6: Final answer
    x = 2,953.90

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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.