Home / 1,276.40-1,760.92-926.32

Finding the Fourth Proportional to 1,276.40, 1,760.92 and 926.32

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Solution

The fourth proportional to 1,276.40, 1,760.92 and 926.32 is: 1,277.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.40 : 1,760.92 = 926.32 : x
  2. Step 2: Convert to fraction form
    1,276.40/1,760.92 = 926.32/x
  3. Step 3: Cross multiply
    1,276.40x = 1,760.92 × 926.32
  4. Step 4: Simplify right side
    1,276.40x = 1,631,175.41
  5. Step 5: Solve for x
    x = 1,631,175.41/1,276.40
  6. Step 6: Final answer
    x = 1,277.95

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Half scale
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Double scale
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1.5x scale

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.