Home / 3,877.96-5,345.40-2,971.57

Finding the Fourth Proportional to 3,877.96, 5,345.40 and 2,971.57

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Solution

The fourth proportional to 3,877.96, 5,345.40 and 2,971.57 is: 4,096.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.96 : 5,345.40 = 2,971.57 : x
  2. Step 2: Convert to fraction form
    3,877.96/5,345.40 = 2,971.57/x
  3. Step 3: Cross multiply
    3,877.96x = 5,345.40 × 2,971.57
  4. Step 4: Simplify right side
    3,877.96x = 15,884,230.28
  5. Step 5: Solve for x
    x = 15,884,230.28/3,877.96
  6. Step 6: Final answer
    x = 4,096.03

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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.