Home / 1,939.04-2,910.36-1,118.24

Finding the Fourth Proportional to 1,939.04, 2,910.36 and 1,118.24

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Solution

The fourth proportional to 1,939.04, 2,910.36 and 1,118.24 is: 1,678.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.04 : 2,910.36 = 1,118.24 : x
  2. Step 2: Convert to fraction form
    1,939.04/2,910.36 = 1,118.24/x
  3. Step 3: Cross multiply
    1,939.04x = 2,910.36 × 1,118.24
  4. Step 4: Simplify right side
    1,939.04x = 3,254,480.97
  5. Step 5: Solve for x
    x = 3,254,480.97/1,939.04
  6. Step 6: Final answer
    x = 1,678.40

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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.