Home / 2,885.62-3,982.80-1,890.32

Finding the Fourth Proportional to 2,885.62, 3,982.80 and 1,890.32

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Solution

The fourth proportional to 2,885.62, 3,982.80 and 1,890.32 is: 2,609.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,885.62 : 3,982.80 = 1,890.32 : x
  2. Step 2: Convert to fraction form
    2,885.62/3,982.80 = 1,890.32/x
  3. Step 3: Cross multiply
    2,885.62x = 3,982.80 × 1,890.32
  4. Step 4: Simplify right side
    2,885.62x = 7,528,766.50
  5. Step 5: Solve for x
    x = 7,528,766.50/2,885.62
  6. Step 6: Final answer
    x = 2,609.07

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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.