Home / 3,820.64-5,271.28-2,141.80

Finding the Fourth Proportional to 3,820.64, 5,271.28 and 2,141.80

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Solution

The fourth proportional to 3,820.64, 5,271.28 and 2,141.80 is: 2,955.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820.64 : 5,271.28 = 2,141.80 : x
  2. Step 2: Convert to fraction form
    3,820.64/5,271.28 = 2,141.80/x
  3. Step 3: Cross multiply
    3,820.64x = 5,271.28 × 2,141.80
  4. Step 4: Simplify right side
    3,820.64x = 11,290,008.97
  5. Step 5: Solve for x
    x = 11,290,008.97/3,820.64
  6. Step 6: Final answer
    x = 2,955.01

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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.