Home / 2,135.05-2,946.36-1,190.92

Finding the Fourth Proportional to 2,135.05, 2,946.36 and 1,190.92

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Solution

The fourth proportional to 2,135.05, 2,946.36 and 1,190.92 is: 1,643.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.05 : 2,946.36 = 1,190.92 : x
  2. Step 2: Convert to fraction form
    2,135.05/2,946.36 = 1,190.92/x
  3. Step 3: Cross multiply
    2,135.05x = 2,946.36 × 1,190.92
  4. Step 4: Simplify right side
    2,135.05x = 3,508,879.05
  5. Step 5: Solve for x
    x = 3,508,879.05/2,135.05
  6. Step 6: Final answer
    x = 1,643.47

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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.