Home / 1,343.12-1,851.72-1,102.98

Finding the Fourth Proportional to 1,343.12, 1,851.72 and 1,102.98

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Solution

The fourth proportional to 1,343.12, 1,851.72 and 1,102.98 is: 1,520.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,343.12 : 1,851.72 = 1,102.98 : x
  2. Step 2: Convert to fraction form
    1,343.12/1,851.72 = 1,102.98/x
  3. Step 3: Cross multiply
    1,343.12x = 1,851.72 × 1,102.98
  4. Step 4: Simplify right side
    1,343.12x = 2,042,410.13
  5. Step 5: Solve for x
    x = 2,042,410.13/1,343.12
  6. Step 6: Final answer
    x = 1,520.65

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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.