Home / 1,944.15-2,681.96-1,280.76

Finding the Fourth Proportional to 1,944.15, 2,681.96 and 1,280.76

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Solution

The fourth proportional to 1,944.15, 2,681.96 and 1,280.76 is: 1,766.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,944.15 : 2,681.96 = 1,280.76 : x
  2. Step 2: Convert to fraction form
    1,944.15/2,681.96 = 1,280.76/x
  3. Step 3: Cross multiply
    1,944.15x = 2,681.96 × 1,280.76
  4. Step 4: Simplify right side
    1,944.15x = 3,434,952.92
  5. Step 5: Solve for x
    x = 3,434,952.92/1,944.15
  6. Step 6: Final answer
    x = 1,766.81

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Half scale
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Double scale
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Similar ratio
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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.