Home / 2,130.08-3,195.45-669.09

Finding the Fourth Proportional to 2,130.08, 3,195.45 and 669.09

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Solution

The fourth proportional to 2,130.08, 3,195.45 and 669.09 is: 1,003.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.08 : 3,195.45 = 669.09 : x
  2. Step 2: Convert to fraction form
    2,130.08/3,195.45 = 669.09/x
  3. Step 3: Cross multiply
    2,130.08x = 3,195.45 × 669.09
  4. Step 4: Simplify right side
    2,130.08x = 2,138,055.62
  5. Step 5: Solve for x
    x = 2,138,055.62/2,130.08
  6. Step 6: Final answer
    x = 1,003.74

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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.