Home / 1,892.08-2,840.28-1,242.64

Finding the Fourth Proportional to 1,892.08, 2,840.28 and 1,242.64

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Solution

The fourth proportional to 1,892.08, 2,840.28 and 1,242.64 is: 1,865.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,892.08 : 2,840.28 = 1,242.64 : x
  2. Step 2: Convert to fraction form
    1,892.08/2,840.28 = 1,242.64/x
  3. Step 3: Cross multiply
    1,892.08x = 2,840.28 × 1,242.64
  4. Step 4: Simplify right side
    1,892.08x = 3,529,445.54
  5. Step 5: Solve for x
    x = 3,529,445.54/1,892.08
  6. Step 6: Final answer
    x = 1,865.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.