Home / 3,521.80-5,282.70-1,330.60

Finding the Fourth Proportional to 3,521.80, 5,282.70 and 1,330.60

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Solution

The fourth proportional to 3,521.80, 5,282.70 and 1,330.60 is: 1,995.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.80 : 5,282.70 = 1,330.60 : x
  2. Step 2: Convert to fraction form
    3,521.80/5,282.70 = 1,330.60/x
  3. Step 3: Cross multiply
    3,521.80x = 5,282.70 × 1,330.60
  4. Step 4: Simplify right side
    3,521.80x = 7,029,160.62
  5. Step 5: Solve for x
    x = 7,029,160.62/3,521.80
  6. Step 6: Final answer
    x = 1,995.90

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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.