Home / 1,680.75-2,319.44-944.75

Finding the Fourth Proportional to 1,680.75, 2,319.44 and 944.75

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Solution

The fourth proportional to 1,680.75, 2,319.44 and 944.75 is: 1,303.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.75 : 2,319.44 = 944.75 : x
  2. Step 2: Convert to fraction form
    1,680.75/2,319.44 = 944.75/x
  3. Step 3: Cross multiply
    1,680.75x = 2,319.44 × 944.75
  4. Step 4: Simplify right side
    1,680.75x = 2,191,286.22
  5. Step 5: Solve for x
    x = 2,191,286.22/1,680.75
  6. Step 6: Final answer
    x = 1,303.76

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Half scale
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Double scale
Find fourth proportional to 1,681.75, 2,320.82 and 945.75
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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.