Home / 3,820.86-5,273.08-2,142.64

Finding the Fourth Proportional to 3,820.86, 5,273.08 and 2,142.64

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Solution

The fourth proportional to 3,820.86, 5,273.08 and 2,142.64 is: 2,957.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820.86 : 5,273.08 = 2,142.64 : x
  2. Step 2: Convert to fraction form
    3,820.86/5,273.08 = 2,142.64/x
  3. Step 3: Cross multiply
    3,820.86x = 5,273.08 × 2,142.64
  4. Step 4: Simplify right side
    3,820.86x = 11,298,312.13
  5. Step 5: Solve for x
    x = 11,298,312.13/3,820.86
  6. Step 6: Final answer
    x = 2,957.01

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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.