Home / 1,287.33-1,914.44-1,246.33

Finding the Fourth Proportional to 1,287.33, 1,914.44 and 1,246.33

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Solution

The fourth proportional to 1,287.33, 1,914.44 and 1,246.33 is: 1,853.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287.33 : 1,914.44 = 1,246.33 : x
  2. Step 2: Convert to fraction form
    1,287.33/1,914.44 = 1,246.33/x
  3. Step 3: Cross multiply
    1,287.33x = 1,914.44 × 1,246.33
  4. Step 4: Simplify right side
    1,287.33x = 2,386,017.66
  5. Step 5: Solve for x
    x = 2,386,017.66/1,287.33
  6. Step 6: Final answer
    x = 1,853.46

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Double scale
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1.5x scale

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.