Home / 2,002.80-3,005.26-1,421.56

Finding the Fourth Proportional to 2,002.80, 3,005.26 and 1,421.56

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Solution

The fourth proportional to 2,002.80, 3,005.26 and 1,421.56 is: 2,133.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,002.80 : 3,005.26 = 1,421.56 : x
  2. Step 2: Convert to fraction form
    2,002.80/3,005.26 = 1,421.56/x
  3. Step 3: Cross multiply
    2,002.80x = 3,005.26 × 1,421.56
  4. Step 4: Simplify right side
    2,002.80x = 4,272,157.41
  5. Step 5: Solve for x
    x = 4,272,157.41/2,002.80
  6. Step 6: Final answer
    x = 2,133.09

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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.