Home / 2,788.04-3,847.68-1,609.20

Finding the Fourth Proportional to 2,788.04, 3,847.68 and 1,609.20

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Solution

The fourth proportional to 2,788.04, 3,847.68 and 1,609.20 is: 2,220.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.04 : 3,847.68 = 1,609.20 : x
  2. Step 2: Convert to fraction form
    2,788.04/3,847.68 = 1,609.20/x
  3. Step 3: Cross multiply
    2,788.04x = 3,847.68 × 1,609.20
  4. Step 4: Simplify right side
    2,788.04x = 6,191,686.66
  5. Step 5: Solve for x
    x = 6,191,686.66/2,788.04
  6. Step 6: Final answer
    x = 2,220.80

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Double scale
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Similar ratio
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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.