Home / 3,971.88-5,478.57-2,555.01

Finding the Fourth Proportional to 3,971.88, 5,478.57 and 2,555.01

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Solution

The fourth proportional to 3,971.88, 5,478.57 and 2,555.01 is: 3,524.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.88 : 5,478.57 = 2,555.01 : x
  2. Step 2: Convert to fraction form
    3,971.88/5,478.57 = 2,555.01/x
  3. Step 3: Cross multiply
    3,971.88x = 5,478.57 × 2,555.01
  4. Step 4: Simplify right side
    3,971.88x = 13,997,801.14
  5. Step 5: Solve for x
    x = 13,997,801.14/3,971.88
  6. Step 6: Final answer
    x = 3,524.23

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Double scale
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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.