Home / 1,260.32-1,738.20-1,230.26

Finding the Fourth Proportional to 1,260.32, 1,738.20 and 1,230.26

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Solution

The fourth proportional to 1,260.32, 1,738.20 and 1,230.26 is: 1,696.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.32 : 1,738.20 = 1,230.26 : x
  2. Step 2: Convert to fraction form
    1,260.32/1,738.20 = 1,230.26/x
  3. Step 3: Cross multiply
    1,260.32x = 1,738.20 × 1,230.26
  4. Step 4: Simplify right side
    1,260.32x = 2,138,437.93
  5. Step 5: Solve for x
    x = 2,138,437.93/1,260.32
  6. Step 6: Final answer
    x = 1,696.74

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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.