Home / 3,288.12-4,537.47-1,890.78

Finding the Fourth Proportional to 3,288.12, 4,537.47 and 1,890.78

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Solution

The fourth proportional to 3,288.12, 4,537.47 and 1,890.78 is: 2,609.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,288.12 : 4,537.47 = 1,890.78 : x
  2. Step 2: Convert to fraction form
    3,288.12/4,537.47 = 1,890.78/x
  3. Step 3: Cross multiply
    3,288.12x = 4,537.47 × 1,890.78
  4. Step 4: Simplify right side
    3,288.12x = 8,579,357.53
  5. Step 5: Solve for x
    x = 8,579,357.53/3,288.12
  6. Step 6: Final answer
    x = 2,609.20

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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.