Home / 1,990.28-2,746.54-1,150.92

Finding the Fourth Proportional to 1,990.28, 2,746.54 and 1,150.92

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Solution

The fourth proportional to 1,990.28, 2,746.54 and 1,150.92 is: 1,588.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.28 : 2,746.54 = 1,150.92 : x
  2. Step 2: Convert to fraction form
    1,990.28/2,746.54 = 1,150.92/x
  3. Step 3: Cross multiply
    1,990.28x = 2,746.54 × 1,150.92
  4. Step 4: Simplify right side
    1,990.28x = 3,161,044.94
  5. Step 5: Solve for x
    x = 3,161,044.94/1,990.28
  6. Step 6: Final answer
    x = 1,588.24

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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.