Home / 3,135.81-4,325.88-2,638.26

Finding the Fourth Proportional to 3,135.81, 4,325.88 and 2,638.26

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Solution

The fourth proportional to 3,135.81, 4,325.88 and 2,638.26 is: 3,639.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.81 : 4,325.88 = 2,638.26 : x
  2. Step 2: Convert to fraction form
    3,135.81/4,325.88 = 2,638.26/x
  3. Step 3: Cross multiply
    3,135.81x = 4,325.88 × 2,638.26
  4. Step 4: Simplify right side
    3,135.81x = 11,412,796.17
  5. Step 5: Solve for x
    x = 11,412,796.17/3,135.81
  6. Step 6: Final answer
    x = 3,639.50

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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.