Home / 2,808.30-4,212.45-1,984.13

Finding the Fourth Proportional to 2,808.30, 4,212.45 and 1,984.13

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Solution

The fourth proportional to 2,808.30, 4,212.45 and 1,984.13 is: 2,976.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,808.30 : 4,212.45 = 1,984.13 : x
  2. Step 2: Convert to fraction form
    2,808.30/4,212.45 = 1,984.13/x
  3. Step 3: Cross multiply
    2,808.30x = 4,212.45 × 1,984.13
  4. Step 4: Simplify right side
    2,808.30x = 8,358,027.36
  5. Step 5: Solve for x
    x = 8,358,027.36/2,808.30
  6. Step 6: Final answer
    x = 2,976.19

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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.