Home / 1,269.12-1,896-1,261.92

Finding the Fourth Proportional to 1,269.12, 1,896 and 1,261.92

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Solution

The fourth proportional to 1,269.12, 1,896 and 1,261.92 is: 1,885.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269.12 : 1,896 = 1,261.92 : x
  2. Step 2: Convert to fraction form
    1,269.12/1,896 = 1,261.92/x
  3. Step 3: Cross multiply
    1,269.12x = 1,896 × 1,261.92
  4. Step 4: Simplify right side
    1,269.12x = 2,392,600.32
  5. Step 5: Solve for x
    x = 2,392,600.32/1,269.12
  6. Step 6: Final answer
    x = 1,885.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.