Home / 1,207.83-1,811.75-438.33

Finding the Fourth Proportional to 1,207.83, 1,811.75 and 438.33

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Solution

The fourth proportional to 1,207.83, 1,811.75 and 438.33 is: 657.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207.83 : 1,811.75 = 438.33 : x
  2. Step 2: Convert to fraction form
    1,207.83/1,811.75 = 438.33/x
  3. Step 3: Cross multiply
    1,207.83x = 1,811.75 × 438.33
  4. Step 4: Simplify right side
    1,207.83x = 794,142.19
  5. Step 5: Solve for x
    x = 794,142.19/1,207.83
  6. Step 6: Final answer
    x = 657.50

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.