Home / 3,890.30-5,365.01-2,561.70

Finding the Fourth Proportional to 3,890.30, 5,365.01 and 2,561.70

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Solution

The fourth proportional to 3,890.30, 5,365.01 and 2,561.70 is: 3,532.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.30 : 5,365.01 = 2,561.70 : x
  2. Step 2: Convert to fraction form
    3,890.30/5,365.01 = 2,561.70/x
  3. Step 3: Cross multiply
    3,890.30x = 5,365.01 × 2,561.70
  4. Step 4: Simplify right side
    3,890.30x = 13,743,546.12
  5. Step 5: Solve for x
    x = 13,743,546.12/3,890.30
  6. Step 6: Final answer
    x = 3,532.77

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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.