Home / 1,271.64-1,755.96-1,230.36

Finding the Fourth Proportional to 1,271.64, 1,755.96 and 1,230.36

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Solution

The fourth proportional to 1,271.64, 1,755.96 and 1,230.36 is: 1,698.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271.64 : 1,755.96 = 1,230.36 : x
  2. Step 2: Convert to fraction form
    1,271.64/1,755.96 = 1,230.36/x
  3. Step 3: Cross multiply
    1,271.64x = 1,755.96 × 1,230.36
  4. Step 4: Simplify right side
    1,271.64x = 2,160,462.95
  5. Step 5: Solve for x
    x = 2,160,462.95/1,271.64
  6. Step 6: Final answer
    x = 1,698.96

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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.