Home / 1,942.64-2,679.98-1,312.97

Finding the Fourth Proportional to 1,942.64, 2,679.98 and 1,312.97

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Solution

The fourth proportional to 1,942.64, 2,679.98 and 1,312.97 is: 1,811.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.64 : 2,679.98 = 1,312.97 : x
  2. Step 2: Convert to fraction form
    1,942.64/2,679.98 = 1,312.97/x
  3. Step 3: Cross multiply
    1,942.64x = 2,679.98 × 1,312.97
  4. Step 4: Simplify right side
    1,942.64x = 3,518,713.38
  5. Step 5: Solve for x
    x = 3,518,713.38/1,942.64
  6. Step 6: Final answer
    x = 1,811.30

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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.