Home / 3,380.81-4,665.40-1,888.72

Finding the Fourth Proportional to 3,380.81, 4,665.40 and 1,888.72

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Solution

The fourth proportional to 3,380.81, 4,665.40 and 1,888.72 is: 2,606.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,380.81 : 4,665.40 = 1,888.72 : x
  2. Step 2: Convert to fraction form
    3,380.81/4,665.40 = 1,888.72/x
  3. Step 3: Cross multiply
    3,380.81x = 4,665.40 × 1,888.72
  4. Step 4: Simplify right side
    3,380.81x = 8,811,617.90
  5. Step 5: Solve for x
    x = 8,811,617.90/3,380.81
  6. Step 6: Final answer
    x = 2,606.37

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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.