Home / 1,615.36-2,230.22-1,112.08

Finding the Fourth Proportional to 1,615.36, 2,230.22 and 1,112.08

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Solution

The fourth proportional to 1,615.36, 2,230.22 and 1,112.08 is: 1,535.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.36 : 2,230.22 = 1,112.08 : x
  2. Step 2: Convert to fraction form
    1,615.36/2,230.22 = 1,112.08/x
  3. Step 3: Cross multiply
    1,615.36x = 2,230.22 × 1,112.08
  4. Step 4: Simplify right side
    1,615.36x = 2,480,183.06
  5. Step 5: Solve for x
    x = 2,480,183.06/1,615.36
  6. Step 6: Final answer
    x = 1,535.37

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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.