Home / 3,421.80-5,128.68-3,010.08

Finding the Fourth Proportional to 3,421.80, 5,128.68 and 3,010.08

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Solution

The fourth proportional to 3,421.80, 5,128.68 and 3,010.08 is: 4,511.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.80 : 5,128.68 = 3,010.08 : x
  2. Step 2: Convert to fraction form
    3,421.80/5,128.68 = 3,010.08/x
  3. Step 3: Cross multiply
    3,421.80x = 5,128.68 × 3,010.08
  4. Step 4: Simplify right side
    3,421.80x = 15,437,737.09
  5. Step 5: Solve for x
    x = 15,437,737.09/3,421.80
  6. Step 6: Final answer
    x = 4,511.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.